18205155

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:665

約数の個数: 40

約数和(自身を含む): 33105600

約数和(自身を除く): 14900445

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 569, 711, 1185, 1707, 2133, 2845, 3555, 5121, 6399, 8535, 10665, 15363, 25605, 31995, 44951, 46089, 76815, 134853, 224755, 230445, 404559, 674265, 1213677, 2022795, 3641031, 6068385, 18205155]

約数ペア:

[(1, 18205155), (3, 6068385), (5, 3641031), (9, 2022795), (15, 1213677), (27, 674265), (45, 404559), (79, 230445), (81, 224755), (135, 134853), (237, 76815), (395, 46089), (405, 44951), (569, 31995), (711, 25605), (1185, 15363), (1707, 10665), (2133, 8535), (2845, 6399), (3555, 5121)]