128897360

素因数分解:

$2^4\times 5^1\times {\mathrm{1611217}}^1$

素因数の和:1611230

約数の個数: 20

約数和(自身を含む): 299686548

約数和(自身を除く): 170789188

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1611217, 3222434, 6444868, 8056085, 12889736, 16112170, 25779472, 32224340, 64448680, 128897360]

約数ペア:

[(1, 128897360), (2, 64448680), (4, 32224340), (5, 25779472), (8, 16112170), (10, 12889736), (16, 8056085), (20, 6444868), (40, 3222434), (80, 1611217)]