21609063

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4831}}^1$

素因数の和:4915

約数の個数: 24

約数和(自身を含む): 36182016

約数和(自身を除く): 14572953

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4831, 14493, 33817, 43479, 101451, 304353, 343001, 1029003, 2401007, 3087009, 7203021, 21609063]

約数ペア:

[(1, 21609063), (3, 7203021), (7, 3087009), (9, 2401007), (21, 1029003), (63, 343001), (71, 304353), (213, 101451), (497, 43479), (639, 33817), (1491, 14493), (4473, 4831)]