156820225

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{70481}}^1$

素因数の和:70580

約数の個数: 12

約数和(自身を含む): 196644780

約数和(自身を除く): 39824555

約数列:

[1, 5, 25, 89, 445, 2225, 70481, 352405, 1762025, 6272809, 31364045, 156820225]

約数ペア:

[(1, 156820225), (5, 31364045), (25, 6272809), (89, 1762025), (445, 352405), (2225, 70481)]