64825520

素因数分解:

$2^4\times 5^1\times {\mathrm{810319}}^1$

素因数の和:810332

約数の個数: 20

約数和(自身を含む): 150719520

約数和(自身を除く): 85894000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 810319, 1620638, 3241276, 4051595, 6482552, 8103190, 12965104, 16206380, 32412760, 64825520]

約数ペア:

[(1, 64825520), (2, 32412760), (4, 16206380), (5, 12965104), (8, 8103190), (10, 6482552), (16, 4051595), (20, 3241276), (40, 1620638), (80, 810319)]