128899240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103951}}^1$

素因数の和:103993

約数の個数: 32

約数和(自身を含む): 299381760

約数和(自身を除く): 170482520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 103951, 207902, 415804, 519755, 831608, 1039510, 2079020, 3222481, 4158040, 6444962, 12889924, 16112405, 25779848, 32224810, 64449620, 128899240]

約数ペア:

[(1, 128899240), (2, 64449620), (4, 32224810), (5, 25779848), (8, 16112405), (10, 12889924), (20, 6444962), (31, 4158040), (40, 3222481), (62, 2079020), (124, 1039510), (155, 831608), (248, 519755), (310, 415804), (620, 207902), (1240, 103951)]