18936909

素因数分解:

$3^4\times {\mathrm{389}}^1\times {\mathrm{601}}^1$

素因数の和:1002

約数の個数: 20

約数和(自身を含む): 28408380

約数和(自身を除く): 9471471

約数列:

[1, 3, 9, 27, 81, 389, 601, 1167, 1803, 3501, 5409, 10503, 16227, 31509, 48681, 233789, 701367, 2104101, 6312303, 18936909]

約数ペア:

[(1, 18936909), (3, 6312303), (9, 2104101), (27, 701367), (81, 233789), (389, 48681), (601, 31509), (1167, 16227), (1803, 10503), (3501, 5409)]