639211076

素因数分解:

$2^2\times 7^2\times {\mathrm{3261281}}^1$

素因数の和:3261299

約数の個数: 18

約数和(自身を含む): 1301251518

約数和(自身を除く): 662040442

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 3261281, 6522562, 13045124, 22828967, 45657934, 91315868, 159802769, 319605538, 639211076]

約数ペア:

[(1, 639211076), (2, 319605538), (4, 159802769), (7, 91315868), (14, 45657934), (28, 22828967), (49, 13045124), (98, 6522562), (196, 3261281)]