20381216

素因数分解:

$2^5\times {\mathrm{137}}^1\times {\mathrm{4649}}^1$

素因数の和:4796

約数の個数: 24

約数和(自身を含む): 40427100

約数和(自身を除く): 20045884

約数列:

[1, 2, 4, 8, 16, 32, 137, 274, 548, 1096, 2192, 4384, 4649, 9298, 18596, 37192, 74384, 148768, 636913, 1273826, 2547652, 5095304, 10190608, 20381216]

約数ペア:

[(1, 20381216), (2, 10190608), (4, 5095304), (8, 2547652), (16, 1273826), (32, 636913), (137, 148768), (274, 74384), (548, 37192), (1096, 18596), (2192, 9298), (4384, 4649)]