20803860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:131

約数の個数: 288

約数和(自身を含む): 83865600

約数和(自身を除く): 63061740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 19, 20, 21, 22, 28, 30, 33, 35, 36, 38, 42, 44, 45, 55, 57, 60, 63, 66, 70, 76, 77, 79, 84, 90, 95, 99, 105, 110, 114, 126, 132, 133, 140, 154, 158, 165, 171, 180, 190, 198, 209, 210, 220, 228, 231, 237, 252, 266, 285, 308, 315, 316, 330, 342, 380, 385, 395, 396, 399, 418, 420, 462, 474, 495, 532, 553, 570, 627, 630, 660, 665, 684, 693, 711, 770, 790, 798, 836, 855, 869, 924, 948, 990, 1045, 1106, 1140, 1155, 1185, 1197, 1254, 1260, 1330, 1386, 1422, 1463, 1501, 1540, 1580, 1596, 1659, 1710, 1738, 1881, 1980, 1995, 2090, 2212, 2310, 2370, 2394, 2508, 2607, 2660, 2765, 2772, 2844, 2926, 3002, 3135, 3318, 3420, 3465, 3476, 3555, 3762, 3990, 4180, 4345, 4389, 4503, 4620, 4740, 4788, 4977, 5214, 5530, 5852, 5985, 6004, 6083, 6270, 6636, 6930, 7110, 7315, 7505, 7524, 7821, 7980, 8295, 8690, 8778, 9006, 9405, 9954, 10428, 10507, 11060, 11970, 12166, 12540, 13035, 13167, 13509, 13860, 14220, 14630, 15010, 15642, 16511, 16590, 17380, 17556, 18012, 18249, 18810, 19908, 21014, 21945, 22515, 23940, 24332, 24885, 26070, 26334, 27018, 29260, 30020, 30415, 31284, 31521, 33022, 33180, 36498, 37620, 39105, 42028, 43890, 45030, 49533, 49770, 52140, 52535, 52668, 54036, 54747, 60830, 63042, 65835, 66044, 67545, 72996, 78210, 82555, 87780, 90060, 91245, 94563, 99066, 99540, 105070, 109494, 115577, 121660, 126084, 131670, 135090, 148599, 156420, 157605, 165110, 182490, 189126, 198132, 210140, 218988, 231154, 247665, 263340, 270180, 273735, 297198, 315210, 330220, 346731, 364980, 378252, 462308, 472815, 495330, 547470, 577885, 594396, 630420, 693462, 742995, 945630, 990660, 1040193, 1094940, 1155770, 1386924, 1485990, 1733655, 1891260, 2080386, 2311540, 2971980, 3467310, 4160772, 5200965, 6934620, 10401930, 20803860]

約数ペア:

[(1, 20803860), (2, 10401930), (3, 6934620), (4, 5200965), (5, 4160772), (6, 3467310), (7, 2971980), (9, 2311540), (10, 2080386), (11, 1891260), (12, 1733655), (14, 1485990), (15, 1386924), (18, 1155770), (19, 1094940), (20, 1040193), (21, 990660), (22, 945630), (28, 742995), (30, 693462), (33, 630420), (35, 594396), (36, 577885), (38, 547470), (42, 495330), (44, 472815), (45, 462308), (55, 378252), (57, 364980), (60, 346731), (63, 330220), (66, 315210), (70, 297198), (76, 273735), (77, 270180), (79, 263340), (84, 247665), (90, 231154), (95, 218988), (99, 210140), (105, 198132), (110, 189126), (114, 182490), (126, 165110), (132, 157605), (133, 156420), (140, 148599), (154, 135090), (158, 131670), (165, 126084), (171, 121660), (180, 115577), (190, 109494), (198, 105070), (209, 99540), (210, 99066), (220, 94563), (228, 91245), (231, 90060), (237, 87780), (252, 82555), (266, 78210), (285, 72996), (308, 67545), (315, 66044), (316, 65835), (330, 63042), (342, 60830), (380, 54747), (385, 54036), (395, 52668), (396, 52535), (399, 52140), (418, 49770), (420, 49533), (462, 45030), (474, 43890), (495, 42028), (532, 39105), (553, 37620), (570, 36498), (627, 33180), (630, 33022), (660, 31521), (665, 31284), (684, 30415), (693, 30020), (711, 29260), (770, 27018), (790, 26334), (798, 26070), (836, 24885), (855, 24332), (869, 23940), (924, 22515), (948, 21945), (990, 21014), (1045, 19908), (1106, 18810), (1140, 18249), (1155, 18012), (1185, 17556), (1197, 17380), (1254, 16590), (1260, 16511), (1330, 15642), (1386, 15010), (1422, 14630), (1463, 14220), (1501, 13860), (1540, 13509), (1580, 13167), (1596, 13035), (1659, 12540), (1710, 12166), (1738, 11970), (1881, 11060), (1980, 10507), (1995, 10428), (2090, 9954), (2212, 9405), (2310, 9006), (2370, 8778), (2394, 8690), (2508, 8295), (2607, 7980), (2660, 7821), (2765, 7524), (2772, 7505), (2844, 7315), (2926, 7110), (3002, 6930), (3135, 6636), (3318, 6270), (3420, 6083), (3465, 6004), (3476, 5985), (3555, 5852), (3762, 5530), (3990, 5214), (4180, 4977), (4345, 4788), (4389, 4740), (4503, 4620)]