18650493

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 30191616

約数和(自身を除く): 11541123

約数列:

[1, 3, 9, 23, 27, 47, 69, 71, 81, 141, 207, 213, 243, 423, 621, 639, 1081, 1269, 1633, 1863, 1917, 3243, 3337, 3807, 4899, 5589, 5751, 9729, 10011, 11421, 14697, 17253, 29187, 30033, 44091, 76751, 87561, 90099, 132273, 230253, 262683, 270297, 396819, 690759, 810891, 2072277, 6216831, 18650493]

約数ペア:

[(1, 18650493), (3, 6216831), (9, 2072277), (23, 810891), (27, 690759), (47, 396819), (69, 270297), (71, 262683), (81, 230253), (141, 132273), (207, 90099), (213, 87561), (243, 76751), (423, 44091), (621, 30033), (639, 29187), (1081, 17253), (1269, 14697), (1633, 11421), (1863, 10011), (1917, 9729), (3243, 5751), (3337, 5589), (3807, 4899)]