78648760

素因数分解:

$2^3\times 5^1\times {\mathrm{1966219}}^1$

素因数の和:1966230

約数の個数: 16

約数和(自身を含む): 176959800

約数和(自身を除く): 98311040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1966219, 3932438, 7864876, 9831095, 15729752, 19662190, 39324380, 78648760]

約数ペア:

[(1, 78648760), (2, 39324380), (4, 19662190), (5, 15729752), (8, 9831095), (10, 7864876), (20, 3932438), (40, 1966219)]