20307205

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:684

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 4691195

約数列:

[1, 5, 61, 139, 305, 479, 695, 2395, 8479, 29219, 42395, 66581, 146095, 332905, 4061441, 20307205]

約数ペア:

[(1, 20307205), (5, 4061441), (61, 332905), (139, 146095), (305, 66581), (479, 42395), (695, 29219), (2395, 8479)]