81304900

素因数分解:

$2^2\times 5^2\times {\mathrm{813049}}^1$

素因数の和:813063

約数の個数: 18

約数和(自身を含む): 176431850

約数和(自身を除く): 95126950

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 813049, 1626098, 3252196, 4065245, 8130490, 16260980, 20326225, 40652450, 81304900]

約数ペア:

[(1, 81304900), (2, 40652450), (4, 20326225), (5, 16260980), (10, 8130490), (20, 4065245), (25, 3252196), (50, 1626098), (100, 813049)]