1279661684

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{643693}}^1$

素因数の和:643775

約数の個数: 24

約数和(自身を含む): 2595374208

約数和(自身を除く): 1315712524

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 643693, 1287386, 2574772, 4505851, 9011702, 18023404, 45702203, 91404406, 182808812, 319915421, 639830842, 1279661684]

約数ペア:

[(1, 1279661684), (2, 639830842), (4, 319915421), (7, 182808812), (14, 91404406), (28, 45702203), (71, 18023404), (142, 9011702), (284, 4505851), (497, 2574772), (994, 1287386), (1988, 643693)]