64728680

素因数分解:

$2^3\times 5^1\times {\mathrm{1618217}}^1$

素因数の和:1618228

約数の個数: 16

約数和(自身を含む): 145639620

約数和(自身を除く): 80910940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1618217, 3236434, 6472868, 8091085, 12945736, 16182170, 32364340, 64728680]

約数ペア:

[(1, 64728680), (2, 32364340), (4, 16182170), (5, 12945736), (8, 8091085), (10, 6472868), (20, 3236434), (40, 1618217)]