20389528

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{8819}}^1$

素因数の和:8859

約数の個数: 24

約数和(自身を含む): 40616100

約数和(自身を除く): 20226572

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 8819, 17638, 35276, 70552, 149923, 299846, 599692, 1199384, 2548691, 5097382, 10194764, 20389528]

約数ペア:

[(1, 20389528), (2, 10194764), (4, 5097382), (8, 2548691), (17, 1199384), (34, 599692), (68, 299846), (136, 149923), (289, 70552), (578, 35276), (1156, 17638), (2312, 8819)]