21118227

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{3449}}^1$

素因数の和:3622

約数の個数: 16

約数和(自身を含む): 30525600

約数和(自身を除く): 9407373

約数列:

[1, 3, 13, 39, 157, 471, 2041, 3449, 6123, 10347, 44837, 134511, 541493, 1624479, 7039409, 21118227]

約数ペア:

[(1, 21118227), (3, 7039409), (13, 1624479), (39, 541493), (157, 134511), (471, 44837), (2041, 10347), (3449, 6123)]