51573680

素因数分解:

$2^4\times 5^1\times {\mathrm{644671}}^1$

素因数の和:644684

約数の個数: 20

約数和(自身を含む): 119908992

約数和(自身を除く): 68335312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644671, 1289342, 2578684, 3223355, 5157368, 6446710, 10314736, 12893420, 25786840, 51573680]

約数ペア:

[(1, 51573680), (2, 25786840), (4, 12893420), (5, 10314736), (8, 6446710), (10, 5157368), (16, 3223355), (20, 2578684), (40, 1289342), (80, 644671)]