21107025

素因数分解:

$3^2\times 5^2\times {\mathrm{93809}}^1$

素因数の和:93825

約数の個数: 18

約数和(自身を含む): 37805430

約数和(自身を除く): 16698405

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 93809, 281427, 469045, 844281, 1407135, 2345225, 4221405, 7035675, 21107025]

約数ペア:

[(1, 21107025), (3, 7035675), (5, 4221405), (9, 2345225), (15, 1407135), (25, 844281), (45, 469045), (75, 281427), (225, 93809)]