64320920

素因数分解:

$2^3\times 5^1\times {\mathrm{1608023}}^1$

素因数の和:1608034

約数の個数: 16

約数和(自身を含む): 144722160

約数和(自身を除く): 80401240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1608023, 3216046, 6432092, 8040115, 12864184, 16080230, 32160460, 64320920]

約数ペア:

[(1, 64320920), (2, 32160460), (4, 16080230), (5, 12864184), (8, 8040115), (10, 6432092), (20, 3216046), (40, 1608023)]