18221985

素因数分解:

$3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1319}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 13489695

約数列:

[1, 3, 5, 9, 15, 45, 307, 921, 1319, 1535, 2763, 3957, 4605, 6595, 11871, 13815, 19785, 59355, 404933, 1214799, 2024665, 3644397, 6073995, 18221985]

約数ペア:

[(1, 18221985), (3, 6073995), (5, 3644397), (9, 2024665), (15, 1214799), (45, 404933), (307, 59355), (921, 19785), (1319, 13815), (1535, 11871), (2763, 6595), (3957, 4605)]