21791475

素因数分解:

$3^2\times 5^2\times {\mathrm{96851}}^1$

素因数の和:96867

約数の個数: 18

約数和(自身を含む): 39031356

約数和(自身を除く): 17239881

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 96851, 290553, 484255, 871659, 1452765, 2421275, 4358295, 7263825, 21791475]

約数ペア:

[(1, 21791475), (3, 7263825), (5, 4358295), (9, 2421275), (15, 1452765), (25, 871659), (45, 484255), (75, 290553), (225, 96851)]