20013840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2$

素因数の和:75

約数の個数: 360

約数和(自身を含む): 88440768

約数和(自身を除く): 68426928

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 19, 20, 21, 22, 24, 28, 30, 33, 35, 36, 38, 40, 42, 44, 45, 48, 55, 56, 57, 60, 63, 66, 70, 72, 76, 77, 80, 84, 88, 90, 95, 99, 105, 110, 112, 114, 120, 126, 132, 133, 140, 144, 152, 154, 165, 168, 171, 176, 180, 190, 198, 209, 210, 220, 228, 231, 240, 252, 264, 266, 280, 285, 304, 308, 315, 330, 336, 342, 360, 361, 380, 385, 396, 399, 418, 420, 440, 456, 462, 495, 504, 528, 532, 560, 570, 616, 627, 630, 660, 665, 684, 693, 720, 722, 760, 770, 792, 798, 836, 840, 855, 880, 912, 924, 990, 1008, 1045, 1064, 1083, 1140, 1155, 1197, 1232, 1254, 1260, 1320, 1330, 1368, 1386, 1444, 1463, 1520, 1540, 1584, 1596, 1672, 1680, 1710, 1805, 1848, 1881, 1980, 1995, 2090, 2128, 2166, 2280, 2310, 2394, 2508, 2520, 2527, 2640, 2660, 2736, 2772, 2888, 2926, 3080, 3135, 3192, 3249, 3344, 3420, 3465, 3610, 3696, 3762, 3960, 3971, 3990, 4180, 4332, 4389, 4560, 4620, 4788, 5016, 5040, 5054, 5320, 5415, 5544, 5776, 5852, 5985, 6160, 6270, 6384, 6498, 6840, 6930, 7220, 7315, 7524, 7581, 7920, 7942, 7980, 8360, 8664, 8778, 9240, 9405, 9576, 10032, 10108, 10640, 10830, 11088, 11704, 11913, 11970, 12540, 12635, 12996, 13167, 13680, 13860, 14440, 14630, 15048, 15162, 15884, 15960, 16245, 16720, 17328, 17556, 18480, 18810, 19152, 19855, 20216, 21660, 21945, 22743, 23408, 23826, 23940, 25080, 25270, 25992, 26334, 27720, 27797, 28880, 29260, 30096, 30324, 31768, 31920, 32490, 35112, 35739, 37620, 37905, 39710, 40432, 43320, 43890, 45486, 47652, 47880, 50160, 50540, 51984, 52668, 55440, 55594, 58520, 59565, 60648, 63536, 64980, 65835, 70224, 71478, 75240, 75810, 79420, 83391, 86640, 87780, 90972, 95304, 95760, 101080, 105336, 111188, 113715, 117040, 119130, 121296, 129960, 131670, 138985, 142956, 150480, 151620, 158840, 166782, 175560, 178695, 181944, 190608, 202160, 210672, 222376, 227430, 238260, 250173, 259920, 263340, 277970, 285912, 303240, 317680, 333564, 351120, 357390, 363888, 416955, 444752, 454860, 476520, 500346, 526680, 555940, 571824, 606480, 667128, 714780, 833910, 909720, 953040, 1000692, 1053360, 1111880, 1250865, 1334256, 1429560, 1667820, 1819440, 2001384, 2223760, 2501730, 2859120, 3335640, 4002768, 5003460, 6671280, 10006920, 20013840]

約数ペア:

[(1, 20013840), (2, 10006920), (3, 6671280), (4, 5003460), (5, 4002768), (6, 3335640), (7, 2859120), (8, 2501730), (9, 2223760), (10, 2001384), (11, 1819440), (12, 1667820), (14, 1429560), (15, 1334256), (16, 1250865), (18, 1111880), (19, 1053360), (20, 1000692), (21, 953040), (22, 909720), (24, 833910), (28, 714780), (30, 667128), (33, 606480), (35, 571824), (36, 555940), (38, 526680), (40, 500346), (42, 476520), (44, 454860), (45, 444752), (48, 416955), (55, 363888), (56, 357390), (57, 351120), (60, 333564), (63, 317680), (66, 303240), (70, 285912), (72, 277970), (76, 263340), (77, 259920), (80, 250173), (84, 238260), (88, 227430), (90, 222376), (95, 210672), (99, 202160), (105, 190608), (110, 181944), (112, 178695), (114, 175560), (120, 166782), (126, 158840), (132, 151620), (133, 150480), (140, 142956), (144, 138985), (152, 131670), (154, 129960), (165, 121296), (168, 119130), (171, 117040), (176, 113715), (180, 111188), (190, 105336), (198, 101080), (209, 95760), (210, 95304), (220, 90972), (228, 87780), (231, 86640), (240, 83391), (252, 79420), (264, 75810), (266, 75240), (280, 71478), (285, 70224), (304, 65835), (308, 64980), (315, 63536), (330, 60648), (336, 59565), (342, 58520), (360, 55594), (361, 55440), (380, 52668), (385, 51984), (396, 50540), (399, 50160), (418, 47880), (420, 47652), (440, 45486), (456, 43890), (462, 43320), (495, 40432), (504, 39710), (528, 37905), (532, 37620), (560, 35739), (570, 35112), (616, 32490), (627, 31920), (630, 31768), (660, 30324), (665, 30096), (684, 29260), (693, 28880), (720, 27797), (722, 27720), (760, 26334), (770, 25992), (792, 25270), (798, 25080), (836, 23940), (840, 23826), (855, 23408), (880, 22743), (912, 21945), (924, 21660), (990, 20216), (1008, 19855), (1045, 19152), (1064, 18810), (1083, 18480), (1140, 17556), (1155, 17328), (1197, 16720), (1232, 16245), (1254, 15960), (1260, 15884), (1320, 15162), (1330, 15048), (1368, 14630), (1386, 14440), (1444, 13860), (1463, 13680), (1520, 13167), (1540, 12996), (1584, 12635), (1596, 12540), (1672, 11970), (1680, 11913), (1710, 11704), (1805, 11088), (1848, 10830), (1881, 10640), (1980, 10108), (1995, 10032), (2090, 9576), (2128, 9405), (2166, 9240), (2280, 8778), (2310, 8664), (2394, 8360), (2508, 7980), (2520, 7942), (2527, 7920), (2640, 7581), (2660, 7524), (2736, 7315), (2772, 7220), (2888, 6930), (2926, 6840), (3080, 6498), (3135, 6384), (3192, 6270), (3249, 6160), (3344, 5985), (3420, 5852), (3465, 5776), (3610, 5544), (3696, 5415), (3762, 5320), (3960, 5054), (3971, 5040), (3990, 5016), (4180, 4788), (4332, 4620), (4389, 4560)]