18216215

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{431}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 22394880

約数和(自身を除く): 4178665

約数列:

[1, 5, 79, 107, 395, 431, 535, 2155, 8453, 34049, 42265, 46117, 170245, 230585, 3643243, 18216215]

約数ペア:

[(1, 18216215), (5, 3643243), (79, 230585), (107, 170245), (395, 46117), (431, 42265), (535, 34049), (2155, 8453)]