19664380

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3499}}^1$

素因数の和:3789

約数の個数: 24

約数和(自身を含む): 41454000

約数和(自身を除く): 21789620

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3499, 5620, 6998, 13996, 17495, 34990, 69980, 983219, 1966438, 3932876, 4916095, 9832190, 19664380]

約数ペア:

[(1, 19664380), (2, 9832190), (4, 4916095), (5, 3932876), (10, 1966438), (20, 983219), (281, 69980), (562, 34990), (1124, 17495), (1405, 13996), (2810, 6998), (3499, 5620)]