21252023

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 26199936

約数和(自身を除く): 4947913

約数列:

[1, 13, 17, 23, 37, 113, 221, 299, 391, 481, 629, 851, 1469, 1921, 2599, 4181, 5083, 8177, 11063, 14467, 24973, 33787, 44183, 54353, 71077, 96163, 188071, 574379, 924001, 1250119, 1634771, 21252023]

約数ペア:

[(1, 21252023), (13, 1634771), (17, 1250119), (23, 924001), (37, 574379), (113, 188071), (221, 96163), (299, 71077), (391, 54353), (481, 44183), (629, 33787), (851, 24973), (1469, 14467), (1921, 11063), (2599, 8177), (4181, 5083)]