643653621

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{611257}}^1$

素因数の和:611282

約数の個数: 20

約数和(自身を含む): 1035471052

約数和(自身を除く): 391817431

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 611257, 1833771, 5501313, 7946341, 16503939, 23839023, 49511817, 71517069, 214551207, 643653621]

約数ペア:

[(1, 643653621), (3, 214551207), (9, 71517069), (13, 49511817), (27, 23839023), (39, 16503939), (81, 7946341), (117, 5501313), (351, 1833771), (1053, 611257)]