18918825

素因数分解:

$3^1\times 5^2\times {\mathrm{193}}^1\times {\mathrm{1307}}^1$

素因数の和:1513

約数の個数: 24

約数和(自身を含む): 31465248

約数和(自身を除く): 12546423

約数列:

[1, 3, 5, 15, 25, 75, 193, 579, 965, 1307, 2895, 3921, 4825, 6535, 14475, 19605, 32675, 98025, 252251, 756753, 1261255, 3783765, 6306275, 18918825]

約数ペア:

[(1, 18918825), (3, 6306275), (5, 3783765), (15, 1261255), (25, 756753), (75, 252251), (193, 98025), (579, 32675), (965, 19605), (1307, 14475), (2895, 6535), (3921, 4825)]