20406323

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2161}}^1$

素因数の和:2258

約数の個数: 16

約数和(自身を含む): 24906240

約数和(自身を除く): 4499917

約数列:

[1, 7, 19, 71, 133, 497, 1349, 2161, 9443, 15127, 41059, 153431, 287413, 1074017, 2915189, 20406323]

約数ペア:

[(1, 20406323), (7, 2915189), (19, 1074017), (71, 287413), (133, 153431), (497, 41059), (1349, 15127), (2161, 9443)]