19570257

素因数分解:

$3^2\times 7^2\times {\mathrm{199}}^1\times {\mathrm{223}}^1$

素因数の和:442

約数の個数: 36

約数和(自身を含む): 33196800

約数和(自身を除く): 13626543

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 199, 223, 441, 597, 669, 1393, 1561, 1791, 2007, 4179, 4683, 9751, 10927, 12537, 14049, 29253, 32781, 44377, 87759, 98343, 133131, 310639, 399393, 931917, 2174473, 2795751, 6523419, 19570257]

約数ペア:

[(1, 19570257), (3, 6523419), (7, 2795751), (9, 2174473), (21, 931917), (49, 399393), (63, 310639), (147, 133131), (199, 98343), (223, 87759), (441, 44377), (597, 32781), (669, 29253), (1393, 14049), (1561, 12537), (1791, 10927), (2007, 9751), (4179, 4683)]