280319360

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 128

約数和(自身を含む): 705024000

約数和(自身を除く): 424704640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 71, 80, 124, 128, 142, 155, 160, 199, 248, 284, 310, 320, 355, 398, 496, 568, 620, 640, 710, 796, 992, 995, 1136, 1240, 1420, 1592, 1984, 1990, 2201, 2272, 2480, 2840, 3184, 3968, 3980, 4402, 4544, 4960, 5680, 6169, 6368, 7960, 8804, 9088, 9920, 11005, 11360, 12338, 12736, 14129, 15920, 17608, 19840, 22010, 22720, 24676, 25472, 28258, 30845, 31840, 35216, 44020, 45440, 49352, 56516, 61690, 63680, 70432, 70645, 88040, 98704, 113032, 123380, 127360, 140864, 141290, 176080, 197408, 226064, 246760, 281728, 282580, 352160, 394816, 437999, 452128, 493520, 565160, 704320, 789632, 875998, 904256, 987040, 1130320, 1408640, 1751996, 1808512, 1974080, 2189995, 2260640, 3503992, 3948160, 4379990, 4521280, 7007984, 8759980, 9042560, 14015968, 17519960, 28031936, 35039920, 56063872, 70079840, 140159680, 280319360]

約数ペア:

[(1, 280319360), (2, 140159680), (4, 70079840), (5, 56063872), (8, 35039920), (10, 28031936), (16, 17519960), (20, 14015968), (31, 9042560), (32, 8759980), (40, 7007984), (62, 4521280), (64, 4379990), (71, 3948160), (80, 3503992), (124, 2260640), (128, 2189995), (142, 1974080), (155, 1808512), (160, 1751996), (199, 1408640), (248, 1130320), (284, 987040), (310, 904256), (320, 875998), (355, 789632), (398, 704320), (496, 565160), (568, 493520), (620, 452128), (640, 437999), (710, 394816), (796, 352160), (992, 282580), (995, 281728), (1136, 246760), (1240, 226064), (1420, 197408), (1592, 176080), (1984, 141290), (1990, 140864), (2201, 127360), (2272, 123380), (2480, 113032), (2840, 98704), (3184, 88040), (3968, 70645), (3980, 70432), (4402, 63680), (4544, 61690), (4960, 56516), (5680, 49352), (6169, 45440), (6368, 44020), (7960, 35216), (8804, 31840), (9088, 30845), (9920, 28258), (11005, 25472), (11360, 24676), (12338, 22720), (12736, 22010), (14129, 19840), (15920, 17608)]