64688080

素因数分解:

$2^4\times 5^1\times {\mathrm{808601}}^1$

素因数の和:808614

約数の個数: 20

約数和(自身を含む): 150399972

約数和(自身を除く): 85711892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 808601, 1617202, 3234404, 4043005, 6468808, 8086010, 12937616, 16172020, 32344040, 64688080]

約数ペア:

[(1, 64688080), (2, 32344040), (4, 16172020), (5, 12937616), (8, 8086010), (10, 6468808), (16, 4043005), (20, 3234404), (40, 1617202), (80, 808601)]