64810960

素因数分解:

$2^4\times 5^1\times {\mathrm{810137}}^1$

素因数の和:810150

約数の個数: 20

約数和(自身を含む): 150685668

約数和(自身を除く): 85874708

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 810137, 1620274, 3240548, 4050685, 6481096, 8101370, 12962192, 16202740, 32405480, 64810960]

約数ペア:

[(1, 64810960), (2, 32405480), (4, 16202740), (5, 12962192), (8, 8101370), (10, 6481096), (16, 4050685), (20, 3240548), (40, 1620274), (80, 810137)]