21112287

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7559}}^1$

素因数の和:7595

約数の個数: 24

約数和(自身を含む): 34473600

約数和(自身を除く): 13361313

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7559, 22677, 52913, 143621, 158739, 370391, 430863, 1005347, 1111173, 3016041, 7037429, 21112287]

約数ペア:

[(1, 21112287), (3, 7037429), (7, 3016041), (19, 1111173), (21, 1005347), (49, 430863), (57, 370391), (133, 158739), (147, 143621), (399, 52913), (931, 22677), (2793, 7559)]