20786816

素因数分解:

$2^7\times {\mathrm{251}}^1\times {\mathrm{647}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 20853664

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 251, 502, 647, 1004, 1294, 2008, 2588, 4016, 5176, 8032, 10352, 16064, 20704, 32128, 41408, 82816, 162397, 324794, 649588, 1299176, 2598352, 5196704, 10393408, 20786816]

約数ペア:

[(1, 20786816), (2, 10393408), (4, 5196704), (8, 2598352), (16, 1299176), (32, 649588), (64, 324794), (128, 162397), (251, 82816), (502, 41408), (647, 32128), (1004, 20704), (1294, 16064), (2008, 10352), (2588, 8032), (4016, 5176)]