18012771

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4027}}^1$

素因数の和:4111

約数の個数: 24

約数和(自身を含む): 30161664

約数和(自身を除く): 12148893

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4027, 4473, 12081, 28189, 36243, 84567, 253701, 285917, 857751, 2001419, 2573253, 6004257, 18012771]

約数ペア:

[(1, 18012771), (3, 6004257), (7, 2573253), (9, 2001419), (21, 857751), (63, 285917), (71, 253701), (213, 84567), (497, 36243), (639, 28189), (1491, 12081), (4027, 4473)]