20684643

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13873}}^1$

素因数の和:13954

約数の個数: 16

約数和(自身を含む): 31965696

約数和(自身を除く): 11281053

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13873, 41619, 97111, 291333, 984983, 2954949, 6894881, 20684643]

約数ペア:

[(1, 20684643), (3, 6894881), (7, 2954949), (21, 984983), (71, 291333), (213, 97111), (497, 41619), (1491, 13873)]