20579915

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 25272000

約数和(自身を除く): 4692085

約数列:

[1, 5, 89, 103, 445, 449, 515, 2245, 9167, 39961, 45835, 46247, 199805, 231235, 4115983, 20579915]

約数ペア:

[(1, 20579915), (5, 4115983), (89, 231235), (103, 199805), (445, 46247), (449, 45835), (515, 39961), (2245, 9167)]