15721601

素因数分解:

$7^2\times {\mathrm{71}}^1\times {\mathrm{4519}}^1$

素因数の和:4604

約数の個数: 12

約数和(自身を含む): 18550080

約数和(自身を除く): 2828479

約数列:

[1, 7, 49, 71, 497, 3479, 4519, 31633, 221431, 320849, 2245943, 15721601]

約数ペア:

[(1, 15721601), (7, 2245943), (49, 320849), (71, 221431), (497, 31633), (3479, 4519)]