21199017

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{499}}^1$

素因数の和:550

約数の個数: 36

約数和(自身を含む): 34998000

約数和(自身を除く): 13798983

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 289, 357, 499, 833, 867, 1497, 2023, 2499, 3493, 6069, 8483, 10479, 14161, 24451, 25449, 42483, 59381, 73353, 144211, 178143, 415667, 432633, 1009477, 1247001, 3028431, 7066339, 21199017]

約数ペア:

[(1, 21199017), (3, 7066339), (7, 3028431), (17, 1247001), (21, 1009477), (49, 432633), (51, 415667), (119, 178143), (147, 144211), (289, 73353), (357, 59381), (499, 42483), (833, 25449), (867, 24451), (1497, 14161), (2023, 10479), (2499, 8483), (3493, 6069)]