18004005

素因数分解:

$3^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{691}}^1$

素因数の和:898

約数の個数: 32

約数和(自身を含む): 32219520

約数和(自身を除く): 14215515

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 193, 579, 691, 965, 1737, 2073, 2895, 3455, 5211, 6219, 8685, 10365, 18657, 26055, 31095, 93285, 133363, 400089, 666815, 1200267, 2000445, 3600801, 6001335, 18004005]

約数ペア:

[(1, 18004005), (3, 6001335), (5, 3600801), (9, 2000445), (15, 1200267), (27, 666815), (45, 400089), (135, 133363), (193, 93285), (579, 31095), (691, 26055), (965, 18657), (1737, 10365), (2073, 8685), (2895, 6219), (3455, 5211)]