21903713

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1352

約数の個数: 16

約数和(自身を含む): 25200000

約数和(自身を除く): 3296287

約数列:

[1, 13, 19, 71, 247, 923, 1249, 1349, 16237, 17537, 23731, 88679, 308503, 1152827, 1684901, 21903713]

約数ペア:

[(1, 21903713), (13, 1684901), (19, 1152827), (71, 308503), (247, 88679), (923, 23731), (1249, 17537), (1349, 16237)]