21185356

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1279}}^1$

素因数の和:1425

約数の個数: 24

約数和(自身を含む): 38384640

約数和(自身を除く): 17199284

約数列:

[1, 2, 4, 41, 82, 101, 164, 202, 404, 1279, 2558, 4141, 5116, 8282, 16564, 52439, 104878, 129179, 209756, 258358, 516716, 5296339, 10592678, 21185356]

約数ペア:

[(1, 21185356), (2, 10592678), (4, 5296339), (41, 516716), (82, 258358), (101, 209756), (164, 129179), (202, 104878), (404, 52439), (1279, 16564), (2558, 8282), (4141, 5116)]