19806657

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 10384959

約数列:

[1, 3, 13, 23, 39, 69, 71, 213, 299, 311, 897, 923, 933, 1633, 2769, 4043, 4899, 7153, 12129, 21229, 21459, 22081, 63687, 66243, 92989, 278967, 287053, 507863, 861159, 1523589, 6602219, 19806657]

約数ペア:

[(1, 19806657), (3, 6602219), (13, 1523589), (23, 861159), (39, 507863), (69, 287053), (71, 278967), (213, 92989), (299, 66243), (311, 63687), (897, 22081), (923, 21459), (933, 21229), (1633, 12129), (2769, 7153), (4043, 4899)]