20530265

素因数分解:

$5^1\times 7^3\times {\mathrm{11971}}^1$

素因数の和:11997

約数の個数: 16

約数和(自身を含む): 28732800

約数和(自身を除く): 8202535

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 11971, 59855, 83797, 418985, 586579, 2932895, 4106053, 20530265]

約数ペア:

[(1, 20530265), (5, 4106053), (7, 2932895), (35, 586579), (49, 418985), (245, 83797), (343, 59855), (1715, 11971)]