12897260080

素因数分解:

$2^4\times 5^1\times {\mathrm{161215751}}^1$

素因数の和:161215764

約数の個数: 20

約数和(自身を含む): 29986129872

約数和(自身を除く): 17088869792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161215751, 322431502, 644863004, 806078755, 1289726008, 1612157510, 2579452016, 3224315020, 6448630040, 12897260080]

約数ペア:

[(1, 12897260080), (2, 6448630040), (4, 3224315020), (5, 2579452016), (8, 1612157510), (10, 1289726008), (16, 806078755), (20, 644863004), (40, 322431502), (80, 161215751)]