291238960

素因数分解:

$2^4\times 5^1\times {\mathrm{3640487}}^1$

素因数の和:3640500

約数の個数: 20

約数和(自身を含む): 677130768

約数和(自身を除く): 385891808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640487, 7280974, 14561948, 18202435, 29123896, 36404870, 58247792, 72809740, 145619480, 291238960]

約数ペア:

[(1, 291238960), (2, 145619480), (4, 72809740), (5, 58247792), (8, 36404870), (10, 29123896), (16, 18202435), (20, 14561948), (40, 7280974), (80, 3640487)]