13319620

素因数分解:

$2^2\times 5^1\times {\mathrm{665981}}^1$

素因数の和:665990

約数の個数: 12

約数和(自身を含む): 27971244

約数和(自身を除く): 14651624

約数列:

[1, 2, 4, 5, 10, 20, 665981, 1331962, 2663924, 3329905, 6659810, 13319620]

約数ペア:

[(1, 13319620), (2, 6659810), (4, 3329905), (5, 2663924), (10, 1331962), (20, 665981)]