19519995

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{6959}}^1$

素因数の和:6995

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 16560645

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 6959, 20877, 34795, 76549, 104385, 118303, 229647, 354909, 382745, 591515, 1148235, 1301333, 1774545, 3903999, 6506665, 19519995]

約数ペア:

[(1, 19519995), (3, 6506665), (5, 3903999), (11, 1774545), (15, 1301333), (17, 1148235), (33, 591515), (51, 382745), (55, 354909), (85, 229647), (165, 118303), (187, 104385), (255, 76549), (561, 34795), (935, 20877), (2805, 6959)]