21065848

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20101}}^1$

素因数の和:20238

約数の個数: 16

約数和(自身を含む): 39801960

約数和(自身を除く): 18736112

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20101, 40202, 80404, 160808, 2633231, 5266462, 10532924, 21065848]

約数ペア:

[(1, 21065848), (2, 10532924), (4, 5266462), (8, 2633231), (131, 160808), (262, 80404), (524, 40202), (1048, 20101)]