21349671

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{757}}^1$

素因数の和:863

約数の個数: 32

約数和(自身を含む): 34928640

約数和(自身を除く): 13578969

約数列:

[1, 3, 7, 17, 21, 51, 79, 119, 237, 357, 553, 757, 1343, 1659, 2271, 4029, 5299, 9401, 12869, 15897, 28203, 38607, 59803, 90083, 179409, 270249, 418621, 1016651, 1255863, 3049953, 7116557, 21349671]

約数ペア:

[(1, 21349671), (3, 7116557), (7, 3049953), (17, 1255863), (21, 1016651), (51, 418621), (79, 270249), (119, 179409), (237, 90083), (357, 59803), (553, 38607), (757, 28203), (1343, 15897), (1659, 12869), (2271, 9401), (4029, 5299)]