21064617

素因数分解:

$3^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{383}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 36427776

約数和(自身を除く): 15363159

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 97, 189, 291, 383, 567, 679, 873, 1149, 2037, 2619, 2681, 3447, 6111, 7857, 8043, 10341, 18333, 24129, 31023, 37151, 54999, 72387, 111453, 217161, 260057, 334359, 780171, 1003077, 2340513, 3009231, 7021539, 21064617]

約数ペア:

[(1, 21064617), (3, 7021539), (7, 3009231), (9, 2340513), (21, 1003077), (27, 780171), (63, 334359), (81, 260057), (97, 217161), (189, 111453), (291, 72387), (383, 54999), (567, 37151), (679, 31023), (873, 24129), (1149, 18333), (2037, 10341), (2619, 8043), (2681, 7857), (3447, 6111)]