12500005

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{18797}}^1$

素因数の和:18828

約数の個数: 16

約数和(自身を含む): 18046080

約数和(自身を除く): 5546075

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 18797, 93985, 131579, 357143, 657895, 1785715, 2500001, 12500005]

約数ペア:

[(1, 12500005), (5, 2500001), (7, 1785715), (19, 657895), (35, 357143), (95, 131579), (133, 93985), (665, 18797)]