8759980

素因数分解:

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

素因数の和:310

約数の個数: 48

約数和(自身を含む): 19353600

約数和(自身を除く): 10593620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 199, 284, 310, 355, 398, 620, 710, 796, 995, 1420, 1990, 2201, 3980, 4402, 6169, 8804, 11005, 12338, 14129, 22010, 24676, 28258, 30845, 44020, 56516, 61690, 70645, 123380, 141290, 282580, 437999, 875998, 1751996, 2189995, 4379990, 8759980]

約数ペア:

[(1, 8759980), (2, 4379990), (4, 2189995), (5, 1751996), (10, 875998), (20, 437999), (31, 282580), (62, 141290), (71, 123380), (124, 70645), (142, 61690), (155, 56516), (199, 44020), (284, 30845), (310, 28258), (355, 24676), (398, 22010), (620, 14129), (710, 12338), (796, 11005), (995, 8804), (1420, 6169), (1990, 4402), (2201, 3980)]