81257813

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{46997}}^1$

素因数の和:47036

約数の個数: 16

約数和(自身を含む): 105275520

約数和(自身を除く): 24017707

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 46997, 328979, 610961, 892943, 4276727, 6250601, 11608259, 81257813]

約数ペア:

[(1, 81257813), (7, 11608259), (13, 6250601), (19, 4276727), (91, 892943), (133, 610961), (247, 328979), (1729, 46997)]