15991025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{15601}}^1$

素因数の和:15652

約数の個数: 12

約数和(自身を含む): 20313804

約数和(自身を除く): 4322779

約数列:

[1, 5, 25, 41, 205, 1025, 15601, 78005, 390025, 639641, 3198205, 15991025]

約数ペア:

[(1, 15991025), (5, 3198205), (25, 639641), (41, 390025), (205, 78005), (1025, 15601)]