21366657

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 35363328

約数和(自身を除く): 13996671

約数列:

[1, 3, 9, 13, 31, 39, 43, 93, 117, 129, 137, 279, 387, 403, 411, 559, 1209, 1233, 1333, 1677, 1781, 3627, 3999, 4247, 5031, 5343, 5891, 11997, 12741, 16029, 17329, 17673, 38223, 51987, 53019, 55211, 76583, 155961, 165633, 182621, 229749, 496899, 547863, 689247, 1643589, 2374073, 7122219, 21366657]

約数ペア:

[(1, 21366657), (3, 7122219), (9, 2374073), (13, 1643589), (31, 689247), (39, 547863), (43, 496899), (93, 229749), (117, 182621), (129, 165633), (137, 155961), (279, 76583), (387, 55211), (403, 53019), (411, 51987), (559, 38223), (1209, 17673), (1233, 17329), (1333, 16029), (1677, 12741), (1781, 11997), (3627, 5891), (3999, 5343), (4247, 5031)]