12780405

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{25819}}^1$

素因数の和:25841

約数の個数: 24

約数和(自身を含む): 24167520

約数和(自身を除く): 11387115

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 25819, 77457, 129095, 232371, 284009, 387285, 852027, 1161855, 1420045, 2556081, 4260135, 12780405]

約数ペア:

[(1, 12780405), (3, 4260135), (5, 2556081), (9, 1420045), (11, 1161855), (15, 852027), (33, 387285), (45, 284009), (55, 232371), (99, 129095), (165, 77457), (495, 25819)]