20465608

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 39346560

約数和(自身を除く): 18880952

約数列:

[1, 2, 4, 8, 71, 137, 142, 263, 274, 284, 526, 548, 568, 1052, 1096, 2104, 9727, 18673, 19454, 36031, 37346, 38908, 72062, 74692, 77816, 144124, 149384, 288248, 2558201, 5116402, 10232804, 20465608]

約数ペア:

[(1, 20465608), (2, 10232804), (4, 5116402), (8, 2558201), (71, 288248), (137, 149384), (142, 144124), (263, 77816), (274, 74692), (284, 72062), (526, 38908), (548, 37346), (568, 36031), (1052, 19454), (1096, 18673), (2104, 9727)]