64541780

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{7351}}^1$

素因数の和:7799

約数の個数: 24

約数和(自身を含む): 135864960

約数和(自身を除く): 71323180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 7351, 8780, 14702, 29404, 36755, 73510, 147020, 3227089, 6454178, 12908356, 16135445, 32270890, 64541780]

約数ペア:

[(1, 64541780), (2, 32270890), (4, 16135445), (5, 12908356), (10, 6454178), (20, 3227089), (439, 147020), (878, 73510), (1756, 36755), (2195, 29404), (4390, 14702), (7351, 8780)]