72118025

素因数分解:

$5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{4001}}^1$

素因数の和:4121

約数の個数: 24

約数和(自身を含む): 103219584

約数和(自身を除く): 31101559

約数列:

[1, 5, 7, 25, 35, 103, 175, 515, 721, 2575, 3605, 4001, 18025, 20005, 28007, 100025, 140035, 412103, 700175, 2060515, 2884721, 10302575, 14423605, 72118025]

約数ペア:

[(1, 72118025), (5, 14423605), (7, 10302575), (25, 2884721), (35, 2060515), (103, 700175), (175, 412103), (515, 140035), (721, 100025), (2575, 28007), (3605, 20005), (4001, 18025)]