18671985

素因数分解:

$3^3\times 5^1\times {\mathrm{138311}}^1$

素因数の和:138325

約数の個数: 16

約数和(自身を含む): 33194880

約数和(自身を除く): 14522895

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 138311, 414933, 691555, 1244799, 2074665, 3734397, 6223995, 18671985]

約数ペア:

[(1, 18671985), (3, 6223995), (5, 3734397), (9, 2074665), (15, 1244799), (27, 691555), (45, 414933), (135, 138311)]