78279280

素因数分解:

$2^4\times 5^1\times {\mathrm{978491}}^1$

素因数の和:978504

約数の個数: 20

約数和(自身を含む): 181999512

約数和(自身を除く): 103720232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 978491, 1956982, 3913964, 4892455, 7827928, 9784910, 15655856, 19569820, 39139640, 78279280]

約数ペア:

[(1, 78279280), (2, 39139640), (4, 19569820), (5, 15655856), (8, 9784910), (10, 7827928), (16, 4892455), (20, 3913964), (40, 1956982), (80, 978491)]