18960986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{7907}}^1$

素因数の和:8029

約数の個数: 16

約数和(自身を含む): 31315680

約数和(自身を除く): 12354694

約数列:

[1, 2, 11, 22, 109, 218, 1199, 2398, 7907, 15814, 86977, 173954, 861863, 1723726, 9480493, 18960986]

約数ペア:

[(1, 18960986), (2, 9480493), (11, 1723726), (22, 861863), (109, 173954), (218, 86977), (1199, 15814), (2398, 7907)]