21768155

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{479}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 26784000

約数和(自身を除く): 5015845

約数列:

[1, 5, 61, 149, 305, 479, 745, 2395, 9089, 29219, 45445, 71371, 146095, 356855, 4353631, 21768155]

約数ペア:

[(1, 21768155), (5, 4353631), (61, 356855), (149, 146095), (305, 71371), (479, 45445), (745, 29219), (2395, 9089)]