28786121

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16649}}^1$

素因数の和:16688

約数の個数: 16

約数和(自身を含む): 37296000

約数和(自身を除く): 8509879

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 16649, 116543, 216437, 316331, 1515059, 2214317, 4112303, 28786121]

約数ペア:

[(1, 28786121), (7, 4112303), (13, 2214317), (19, 1515059), (91, 316331), (133, 216437), (247, 116543), (1729, 16649)]