21505210

素因数分解:

$2^1\times 5^1\times {\mathrm{881}}^1\times {\mathrm{2441}}^1$

素因数の和:3329

約数の個数: 16

約数和(自身を含む): 38769192

約数和(自身を除く): 17263982

約数列:

[1, 2, 5, 10, 881, 1762, 2441, 4405, 4882, 8810, 12205, 24410, 2150521, 4301042, 10752605, 21505210]

約数ペア:

[(1, 21505210), (2, 10752605), (5, 4301042), (10, 2150521), (881, 24410), (1762, 12205), (2441, 8810), (4405, 4882)]