51536080

素因数分解:

$2^4\times 5^1\times {\mathrm{644201}}^1$

素因数の和:644214

約数の個数: 20

約数和(自身を含む): 119821572

約数和(自身を除く): 68285492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644201, 1288402, 2576804, 3221005, 5153608, 6442010, 10307216, 12884020, 25768040, 51536080]

約数ペア:

[(1, 51536080), (2, 25768040), (4, 12884020), (5, 10307216), (8, 6442010), (10, 5153608), (16, 3221005), (20, 2576804), (40, 1288402), (80, 644201)]