128542760

素因数分解:

$2^3\times 5^1\times {\mathrm{1531}}^1\times {\mathrm{2099}}^1$

素因数の和:3641

約数の個数: 32

約数和(自身を含む): 289548000

約数和(自身を除く): 161005240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1531, 2099, 3062, 4198, 6124, 7655, 8396, 10495, 12248, 15310, 16792, 20990, 30620, 41980, 61240, 83960, 3213569, 6427138, 12854276, 16067845, 25708552, 32135690, 64271380, 128542760]

約数ペア:

[(1, 128542760), (2, 64271380), (4, 32135690), (5, 25708552), (8, 16067845), (10, 12854276), (20, 6427138), (40, 3213569), (1531, 83960), (2099, 61240), (3062, 41980), (4198, 30620), (6124, 20990), (7655, 16792), (8396, 15310), (10495, 12248)]