20471217

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7393}}^1$

素因数の和:7480

約数の個数: 16

約数和(自身を含む): 29812608

約数和(自身を除く): 9341391

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7393, 22179, 96109, 288327, 524903, 1574709, 6823739, 20471217]

約数ペア:

[(1, 20471217), (3, 6823739), (13, 1574709), (39, 524903), (71, 288327), (213, 96109), (923, 22179), (2769, 7393)]