639894529

素因数分解:

${\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1\times {\mathrm{947}}^1$

素因数の和:1356

約数の個数: 16

約数和(自身を含む): 672731136

約数和(自身を除く): 32836607

約数列:

[1, 31, 71, 307, 947, 2201, 9517, 21797, 29357, 67237, 290729, 675707, 2084347, 9012599, 20641759, 639894529]

約数ペア:

[(1, 639894529), (31, 20641759), (71, 9012599), (307, 2084347), (947, 675707), (2201, 290729), (9517, 67237), (21797, 29357)]