21940917

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:744

約数の個数: 16

約数和(自身を含む): 29859840

約数和(自身を除く): 7918923

約数列:

[1, 3, 71, 213, 239, 431, 717, 1293, 16969, 30601, 50907, 91803, 103009, 309027, 7313639, 21940917]

約数ペア:

[(1, 21940917), (3, 7313639), (71, 309027), (213, 103009), (239, 91803), (431, 50907), (717, 30601), (1293, 16969)]