78858680

素因数分解:

$2^3\times 5^1\times {\mathrm{1971467}}^1$

素因数の和:1971478

約数の個数: 16

約数和(自身を含む): 177432120

約数和(自身を除く): 98573440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1971467, 3942934, 7885868, 9857335, 15771736, 19714670, 39429340, 78858680]

約数ペア:

[(1, 78858680), (2, 39429340), (4, 19714670), (5, 15771736), (8, 9857335), (10, 7885868), (20, 3942934), (40, 1971467)]