64664560

素因数分解:

$2^4\times 5^1\times {\mathrm{808307}}^1$

素因数の和:808320

約数の個数: 20

約数和(自身を含む): 150345288

約数和(自身を除く): 85680728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 808307, 1616614, 3233228, 4041535, 6466456, 8083070, 12932912, 16166140, 32332280, 64664560]

約数ペア:

[(1, 64664560), (2, 32332280), (4, 16166140), (5, 12932912), (8, 8083070), (10, 6466456), (16, 4041535), (20, 3233228), (40, 1616614), (80, 808307)]