9980900

素因数分解:

$2^2\times 5^2\times {\mathrm{99809}}^1$

素因数の和:99823

約数の個数: 18

約数和(自身を含む): 21658770

約数和(自身を除く): 11677870

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 99809, 199618, 399236, 499045, 998090, 1996180, 2495225, 4990450, 9980900]

約数ペア:

[(1, 9980900), (2, 4990450), (4, 2495225), (5, 1996180), (10, 998090), (20, 499045), (25, 399236), (50, 199618), (100, 99809)]