20327405

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2861}}^1$

素因数の和:2909

約数の個数: 24

約数和(自身を含む): 29364120

約数和(自身を除く): 9036715

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 2861, 7105, 14305, 20027, 82969, 100135, 140189, 414845, 580783, 700945, 2903915, 4065481, 20327405]

約数ペア:

[(1, 20327405), (5, 4065481), (7, 2903915), (29, 700945), (35, 580783), (49, 414845), (145, 140189), (203, 100135), (245, 82969), (1015, 20027), (1421, 14305), (2861, 7105)]