20145740

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1031}}^1$

素因数の和:2017

約数の個数: 24

約数和(自身を含む): 42390432

約数和(自身を除く): 22244692

約数列:

[1, 2, 4, 5, 10, 20, 977, 1031, 1954, 2062, 3908, 4124, 4885, 5155, 9770, 10310, 19540, 20620, 1007287, 2014574, 4029148, 5036435, 10072870, 20145740]

約数ペア:

[(1, 20145740), (2, 10072870), (4, 5036435), (5, 4029148), (10, 2014574), (20, 1007287), (977, 20620), (1031, 19540), (1954, 10310), (2062, 9770), (3908, 5155), (4124, 4885)]