21634865

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 9158095

約数列:

[1, 5, 7, 35, 53, 107, 109, 265, 371, 535, 545, 749, 763, 1855, 3745, 3815, 5671, 5777, 11663, 28355, 28885, 39697, 40439, 58315, 81641, 198485, 202195, 408205, 618139, 3090695, 4326973, 21634865]

約数ペア:

[(1, 21634865), (5, 4326973), (7, 3090695), (35, 618139), (53, 408205), (107, 202195), (109, 198485), (265, 81641), (371, 58315), (535, 40439), (545, 39697), (749, 28885), (763, 28355), (1855, 11663), (3745, 5777), (3815, 5671)]