31091420

素因数分解:

$2^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1601}}^1$

素因数の和:2581

約数の個数: 24

約数和(自身を含む): 65400048

約数和(自身を除く): 34308628

約数列:

[1, 2, 4, 5, 10, 20, 971, 1601, 1942, 3202, 3884, 4855, 6404, 8005, 9710, 16010, 19420, 32020, 1554571, 3109142, 6218284, 7772855, 15545710, 31091420]

約数ペア:

[(1, 31091420), (2, 15545710), (4, 7772855), (5, 6218284), (10, 3109142), (20, 1554571), (971, 32020), (1601, 19420), (1942, 16010), (3202, 9710), (3884, 8005), (4855, 6404)]