20936409

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7561}}^1$

素因数の和:7648

約数の個数: 16

約数和(自身を含む): 30489984

約数和(自身を除く): 9553575

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7561, 22683, 98293, 294879, 536831, 1610493, 6978803, 20936409]

約数ペア:

[(1, 20936409), (3, 6978803), (13, 1610493), (39, 536831), (71, 294879), (213, 98293), (923, 22683), (2769, 7561)]