25688680

素因数分解:

$2^3\times 5^1\times {\mathrm{642217}}^1$

素因数の和:642228

約数の個数: 16

約数和(自身を含む): 57799620

約数和(自身を除く): 32110940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 642217, 1284434, 2568868, 3211085, 5137736, 6422170, 12844340, 25688680]

約数ペア:

[(1, 25688680), (2, 12844340), (4, 6422170), (5, 5137736), (8, 3211085), (10, 2568868), (20, 1284434), (40, 642217)]