31309840

素因数分解:

$2^4\times 5^1\times {\mathrm{391373}}^1$

素因数の和:391386

約数の個数: 20

約数和(自身を含む): 72795564

約数和(自身を除く): 41485724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 391373, 782746, 1565492, 1956865, 3130984, 3913730, 6261968, 7827460, 15654920, 31309840]

約数ペア:

[(1, 31309840), (2, 15654920), (4, 7827460), (5, 6261968), (8, 3913730), (10, 3130984), (16, 1956865), (20, 1565492), (40, 782746), (80, 391373)]