78902480

素因数分解:

$2^4\times 5^1\times {\mathrm{986281}}^1$

素因数の和:986294

約数の個数: 20

約数和(自身を含む): 183448452

約数和(自身を除く): 104545972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986281, 1972562, 3945124, 4931405, 7890248, 9862810, 15780496, 19725620, 39451240, 78902480]

約数ペア:

[(1, 78902480), (2, 39451240), (4, 19725620), (5, 15780496), (8, 9862810), (10, 7890248), (16, 4931405), (20, 3945124), (40, 1972562), (80, 986281)]