21069069

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8431}}^1$

素因数の和:8465

約数の個数: 24

約数和(自身を含む): 34604928

約数和(自身を除く): 13535859

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8431, 25293, 59017, 143327, 177051, 413119, 429981, 1003289, 1239357, 3009867, 7023023, 21069069]

約数ペア:

[(1, 21069069), (3, 7023023), (7, 3009867), (17, 1239357), (21, 1003289), (49, 429981), (51, 413119), (119, 177051), (147, 143327), (357, 59017), (833, 25293), (2499, 8431)]