78873680

素因数分解:

$2^4\times 5^1\times {\mathrm{985921}}^1$

素因数の和:985934

約数の個数: 20

約数和(自身を含む): 183381492

約数和(自身を除く): 104507812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985921, 1971842, 3943684, 4929605, 7887368, 9859210, 15774736, 19718420, 39436840, 78873680]

約数ペア:

[(1, 78873680), (2, 39436840), (4, 19718420), (5, 15774736), (8, 9859210), (10, 7887368), (16, 4929605), (20, 3943684), (40, 1971842), (80, 985921)]