12845740

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4091}}^1$

素因数の和:4257

約数の個数: 24

約数和(自身を含む): 27154512

約数和(自身を除く): 14308772

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 4091, 8182, 16364, 20455, 40910, 81820, 642287, 1284574, 2569148, 3211435, 6422870, 12845740]

約数ペア:

[(1, 12845740), (2, 6422870), (4, 3211435), (5, 2569148), (10, 1284574), (20, 642287), (157, 81820), (314, 40910), (628, 20455), (785, 16364), (1570, 8182), (3140, 4091)]