16128005

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:508

約数の個数: 16

約数和(自身を含む): 19813248

約数和(自身を除く): 3685243

約数列:

[1, 5, 71, 181, 251, 355, 905, 1255, 12851, 17821, 45431, 64255, 89105, 227155, 3225601, 16128005]

約数ペア:

[(1, 16128005), (5, 3225601), (71, 227155), (181, 89105), (251, 64255), (355, 45431), (905, 17821), (1255, 12851)]