20497460

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1049}}^1$

素因数の和:2035

約数の個数: 24

約数和(自身を含む): 43129800

約数和(自身を除く): 22632340

約数列:

[1, 2, 4, 5, 10, 20, 977, 1049, 1954, 2098, 3908, 4196, 4885, 5245, 9770, 10490, 19540, 20980, 1024873, 2049746, 4099492, 5124365, 10248730, 20497460]

約数ペア:

[(1, 20497460), (2, 10248730), (4, 5124365), (5, 4099492), (10, 2049746), (20, 1024873), (977, 20980), (1049, 19540), (1954, 10490), (2098, 9770), (3908, 5245), (4196, 4885)]