12970294420

素因数分解:

$2^2\times 5^1\times {\mathrm{648514721}}^1$

素因数の和:648514730

約数の個数: 12

約数和(自身を含む): 27237618324

約数和(自身を除く): 14267323904

約数列:

[1, 2, 4, 5, 10, 20, 648514721, 1297029442, 2594058884, 3242573605, 6485147210, 12970294420]

約数ペア:

[(1, 12970294420), (2, 6485147210), (4, 3242573605), (5, 2594058884), (10, 1297029442), (20, 648514721)]