20923560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:85

約数の個数: 288

約数和(自身を含む): 85587840

約数和(自身を除く): 64664280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 23, 24, 28, 30, 35, 36, 38, 40, 42, 45, 46, 56, 57, 60, 63, 69, 70, 72, 76, 84, 90, 92, 95, 105, 114, 115, 120, 126, 133, 138, 140, 152, 161, 168, 171, 180, 184, 190, 207, 210, 228, 230, 252, 266, 276, 280, 285, 315, 322, 342, 345, 360, 361, 380, 399, 414, 420, 437, 456, 460, 483, 504, 532, 552, 570, 630, 644, 665, 684, 690, 722, 760, 798, 805, 828, 840, 855, 874, 920, 966, 1035, 1064, 1083, 1140, 1197, 1260, 1288, 1311, 1330, 1368, 1380, 1444, 1449, 1596, 1610, 1656, 1710, 1748, 1805, 1932, 1995, 2070, 2166, 2185, 2280, 2394, 2415, 2520, 2527, 2622, 2660, 2760, 2888, 2898, 3059, 3192, 3220, 3249, 3420, 3496, 3610, 3864, 3933, 3990, 4140, 4332, 4370, 4788, 4830, 5054, 5244, 5320, 5415, 5796, 5985, 6118, 6440, 6498, 6555, 6840, 7220, 7245, 7581, 7866, 7980, 8280, 8303, 8664, 8740, 9177, 9576, 9660, 10108, 10488, 10830, 11592, 11970, 12236, 12635, 12996, 13110, 14440, 14490, 15162, 15295, 15732, 15960, 16245, 16606, 17480, 18354, 19320, 19665, 20216, 21660, 22743, 23940, 24472, 24909, 25270, 25992, 26220, 27531, 28980, 30324, 30590, 31464, 32490, 33212, 36708, 37905, 39330, 41515, 43320, 45486, 45885, 47880, 49818, 50540, 52440, 55062, 57960, 58121, 60648, 61180, 64980, 66424, 73416, 74727, 75810, 78660, 83030, 90972, 91770, 99636, 101080, 110124, 113715, 116242, 122360, 124545, 129960, 137655, 149454, 151620, 157320, 166060, 174363, 181944, 183540, 199272, 220248, 227430, 232484, 249090, 275310, 290605, 298908, 303240, 332120, 348726, 367080, 373635, 454860, 464968, 498180, 523089, 550620, 581210, 597816, 697452, 747270, 871815, 909720, 996360, 1046178, 1101240, 1162420, 1394904, 1494540, 1743630, 2092356, 2324840, 2615445, 2989080, 3487260, 4184712, 5230890, 6974520, 10461780, 20923560]

約数ペア:

[(1, 20923560), (2, 10461780), (3, 6974520), (4, 5230890), (5, 4184712), (6, 3487260), (7, 2989080), (8, 2615445), (9, 2324840), (10, 2092356), (12, 1743630), (14, 1494540), (15, 1394904), (18, 1162420), (19, 1101240), (20, 1046178), (21, 996360), (23, 909720), (24, 871815), (28, 747270), (30, 697452), (35, 597816), (36, 581210), (38, 550620), (40, 523089), (42, 498180), (45, 464968), (46, 454860), (56, 373635), (57, 367080), (60, 348726), (63, 332120), (69, 303240), (70, 298908), (72, 290605), (76, 275310), (84, 249090), (90, 232484), (92, 227430), (95, 220248), (105, 199272), (114, 183540), (115, 181944), (120, 174363), (126, 166060), (133, 157320), (138, 151620), (140, 149454), (152, 137655), (161, 129960), (168, 124545), (171, 122360), (180, 116242), (184, 113715), (190, 110124), (207, 101080), (210, 99636), (228, 91770), (230, 90972), (252, 83030), (266, 78660), (276, 75810), (280, 74727), (285, 73416), (315, 66424), (322, 64980), (342, 61180), (345, 60648), (360, 58121), (361, 57960), (380, 55062), (399, 52440), (414, 50540), (420, 49818), (437, 47880), (456, 45885), (460, 45486), (483, 43320), (504, 41515), (532, 39330), (552, 37905), (570, 36708), (630, 33212), (644, 32490), (665, 31464), (684, 30590), (690, 30324), (722, 28980), (760, 27531), (798, 26220), (805, 25992), (828, 25270), (840, 24909), (855, 24472), (874, 23940), (920, 22743), (966, 21660), (1035, 20216), (1064, 19665), (1083, 19320), (1140, 18354), (1197, 17480), (1260, 16606), (1288, 16245), (1311, 15960), (1330, 15732), (1368, 15295), (1380, 15162), (1444, 14490), (1449, 14440), (1596, 13110), (1610, 12996), (1656, 12635), (1710, 12236), (1748, 11970), (1805, 11592), (1932, 10830), (1995, 10488), (2070, 10108), (2166, 9660), (2185, 9576), (2280, 9177), (2394, 8740), (2415, 8664), (2520, 8303), (2527, 8280), (2622, 7980), (2660, 7866), (2760, 7581), (2888, 7245), (2898, 7220), (3059, 6840), (3192, 6555), (3220, 6498), (3249, 6440), (3420, 6118), (3496, 5985), (3610, 5796), (3864, 5415), (3933, 5320), (3990, 5244), (4140, 5054), (4332, 4830), (4370, 4788)]