218487519

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{20113}}^1$

素因数の和:20207

約数の個数: 24

約数和(自身を含む): 338880672

約数和(自身を除く): 120393153

約数列:

[1, 3, 9, 17, 51, 71, 153, 213, 639, 1207, 3621, 10863, 20113, 60339, 181017, 341921, 1025763, 1428023, 3077289, 4284069, 12852207, 24276391, 72829173, 218487519]

約数ペア:

[(1, 218487519), (3, 72829173), (9, 24276391), (17, 12852207), (51, 4284069), (71, 3077289), (153, 1428023), (213, 1025763), (639, 341921), (1207, 181017), (3621, 60339), (10863, 20113)]