81268100

素因数分解:

$2^2\times 5^2\times {\mathrm{812681}}^1$

素因数の和:812695

約数の個数: 18

約数和(自身を含む): 176351994

約数和(自身を除く): 95083894

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 812681, 1625362, 3250724, 4063405, 8126810, 16253620, 20317025, 40634050, 81268100]

約数ペア:

[(1, 81268100), (2, 40634050), (4, 20317025), (5, 16253620), (10, 8126810), (20, 4063405), (25, 3250724), (50, 1625362), (100, 812681)]