30781891

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{757}}^1$

素因数の和:958

約数の個数: 16

約数和(自身を含む): 36408256

約数和(自身を除く): 5626365

約数列:

[1, 7, 37, 157, 259, 757, 1099, 5299, 5809, 28009, 40663, 118849, 196063, 831943, 4397413, 30781891]

約数ペア:

[(1, 30781891), (7, 4397413), (37, 831943), (157, 196063), (259, 118849), (757, 40663), (1099, 28009), (5299, 5809)]