21291460

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9421}}^1$

素因数の和:9543

約数の個数: 24

約数和(自身を含む): 45112536

約数和(自身を除く): 23821076

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9421, 18842, 37684, 47105, 94210, 188420, 1064573, 2129146, 4258292, 5322865, 10645730, 21291460]

約数ペア:

[(1, 21291460), (2, 10645730), (4, 5322865), (5, 4258292), (10, 2129146), (20, 1064573), (113, 188420), (226, 94210), (452, 47105), (565, 37684), (1130, 18842), (2260, 9421)]