1581321

素因数分解:

$3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{293}}^1$

素因数の和:560

約数の個数: 16

約数和(自身を含む): 2427264

約数和(自身を除く): 845943

約数列:

[1, 3, 7, 21, 257, 293, 771, 879, 1799, 2051, 5397, 6153, 75301, 225903, 527107, 1581321]

約数ペア:

[(1, 1581321), (3, 527107), (7, 225903), (21, 75301), (257, 6153), (293, 5397), (771, 2051), (879, 1799)]