20291740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144941}}^1$

素因数の和:144957

約数の個数: 24

約数和(自身を含む): 48700512

約数和(自身を除く): 28408772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144941, 289882, 579764, 724705, 1014587, 1449410, 2029174, 2898820, 4058348, 5072935, 10145870, 20291740]

約数ペア:

[(1, 20291740), (2, 10145870), (4, 5072935), (5, 4058348), (7, 2898820), (10, 2029174), (14, 1449410), (20, 1014587), (28, 724705), (35, 579764), (70, 289882), (140, 144941)]