78812769

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{52859}}^1$

素因数の和:52940

約数の個数: 16

約数和(自身を含む): 121789440

約数和(自身を除く): 42976671

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 52859, 158577, 370013, 1110039, 3752989, 11258967, 26270923, 78812769]

約数ペア:

[(1, 78812769), (3, 26270923), (7, 11258967), (21, 3752989), (71, 1110039), (213, 370013), (497, 158577), (1491, 52859)]