20928691

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{787}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 24963840

約数和(自身を除く): 4035149

約数列:

[1, 7, 29, 131, 203, 787, 917, 3799, 5509, 22823, 26593, 103097, 159761, 721679, 2989813, 20928691]

約数ペア:

[(1, 20928691), (7, 2989813), (29, 721679), (131, 159761), (203, 103097), (787, 26593), (917, 22823), (3799, 5509)]