21052540

素因数分解:

$2^2\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{1033}}^1$

素因数の和:2061

約数の個数: 24

約数和(自身を含む): 44296560

約数和(自身を除く): 23244020

約数列:

[1, 2, 4, 5, 10, 20, 1019, 1033, 2038, 2066, 4076, 4132, 5095, 5165, 10190, 10330, 20380, 20660, 1052627, 2105254, 4210508, 5263135, 10526270, 21052540]

約数ペア:

[(1, 21052540), (2, 10526270), (4, 5263135), (5, 4210508), (10, 2105254), (20, 1052627), (1019, 20660), (1033, 20380), (2038, 10330), (2066, 10190), (4076, 5165), (4132, 5095)]