21056710

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123863}}^1$

素因数の和:123887

約数の個数: 16

約数和(自身を含む): 40131936

約数和(自身を除く): 19075226

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123863, 247726, 619315, 1238630, 2105671, 4211342, 10528355, 21056710]

約数ペア:

[(1, 21056710), (2, 10528355), (5, 4211342), (10, 2105671), (17, 1238630), (34, 619315), (85, 247726), (170, 123863)]