813967

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^2$

素因数の和:91

約数の個数: 18

約数和(自身を含む): 1056552

約数和(自身を除く): 242585

約数列:

[1, 7, 11, 31, 77, 121, 217, 341, 847, 961, 2387, 3751, 6727, 10571, 26257, 73997, 116281, 813967]

約数ペア:

[(1, 813967), (7, 116281), (11, 73997), (31, 26257), (77, 10571), (121, 6727), (217, 3751), (341, 2387), (847, 961)]