285979480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{997}}^1$

素因数の和:1180

約数の個数: 64

約数和(自身を含む): 659638080

約数和(自身を除く): 373658600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 101, 142, 202, 284, 355, 404, 505, 568, 710, 808, 997, 1010, 1420, 1994, 2020, 2840, 3988, 4040, 4985, 7171, 7976, 9970, 14342, 19940, 28684, 35855, 39880, 57368, 70787, 71710, 100697, 141574, 143420, 201394, 283148, 286840, 353935, 402788, 503485, 566296, 707870, 805576, 1006970, 1415740, 2013940, 2831480, 4027880, 7149487, 14298974, 28597948, 35747435, 57195896, 71494870, 142989740, 285979480]

約数ペア:

[(1, 285979480), (2, 142989740), (4, 71494870), (5, 57195896), (8, 35747435), (10, 28597948), (20, 14298974), (40, 7149487), (71, 4027880), (101, 2831480), (142, 2013940), (202, 1415740), (284, 1006970), (355, 805576), (404, 707870), (505, 566296), (568, 503485), (710, 402788), (808, 353935), (997, 286840), (1010, 283148), (1420, 201394), (1994, 143420), (2020, 141574), (2840, 100697), (3988, 71710), (4040, 70787), (4985, 57368), (7171, 39880), (7976, 35855), (9970, 28684), (14342, 19940)]