18268821

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{5501}}^1$

素因数の和:5554

約数の個数: 20

約数和(自身を含む): 27961164

約数和(自身を除く): 9692343

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 5501, 16503, 49509, 148527, 225541, 445581, 676623, 2029869, 6089607, 18268821]

約数ペア:

[(1, 18268821), (3, 6089607), (9, 2029869), (27, 676623), (41, 445581), (81, 225541), (123, 148527), (369, 49509), (1107, 16503), (3321, 5501)]