87779975

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{85639}}^1$

素因数の和:85690

約数の個数: 12

約数和(自身を含む): 111503280

約数和(自身を除く): 23723305

約数列:

[1, 5, 25, 41, 205, 1025, 85639, 428195, 2140975, 3511199, 17555995, 87779975]

約数ペア:

[(1, 87779975), (5, 17555995), (25, 3511199), (41, 2140975), (205, 428195), (1025, 85639)]