18917962567

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1227881}}^1$

素因数の和:1227990

約数の個数: 16

約数和(自身を含む): 22632321024

約数和(自身を除く): 3714358457

約数列:

[1, 7, 31, 71, 217, 497, 2201, 15407, 1227881, 8595167, 38064311, 87179551, 266450177, 610256857, 2702566081, 18917962567]

約数ペア:

[(1, 18917962567), (7, 2702566081), (31, 610256857), (71, 266450177), (217, 87179551), (497, 38064311), (2201, 8595167), (15407, 1227881)]