28403195

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{4211}}^1$

素因数の和:4306

約数の個数: 16

約数和(自身を含む): 36391680

約数和(自身を除く): 7988485

約数列:

[1, 5, 19, 71, 95, 355, 1349, 4211, 6745, 21055, 80009, 298981, 400045, 1494905, 5680639, 28403195]

約数ペア:

[(1, 28403195), (5, 5680639), (19, 1494905), (71, 400045), (95, 298981), (355, 80009), (1349, 21055), (4211, 6745)]