72820225

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{36871}}^1$

素因数の和:36960

約数の個数: 12

約数和(自身を含む): 91442560

約数和(自身を除く): 18622335

約数列:

[1, 5, 25, 79, 395, 1975, 36871, 184355, 921775, 2912809, 14564045, 72820225]

約数ペア:

[(1, 72820225), (5, 14564045), (25, 2912809), (79, 921775), (395, 184355), (1975, 36871)]