20002216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2161}}^1$

素因数の和:2269

約数の個数: 32

約数和(自身を含む): 40861800

約数和(自身を除く): 20859584

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2161, 2314, 4322, 4628, 8644, 9256, 17288, 28093, 56186, 112372, 192329, 224744, 384658, 769316, 1538632, 2500277, 5000554, 10001108, 20002216]

約数ペア:

[(1, 20002216), (2, 10001108), (4, 5000554), (8, 2500277), (13, 1538632), (26, 769316), (52, 384658), (89, 224744), (104, 192329), (178, 112372), (356, 56186), (712, 28093), (1157, 17288), (2161, 9256), (2314, 8644), (4322, 4628)]