21154263

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4271}}^1$

素因数の和:4414

約数の個数: 16

約数和(自身を含む): 30621696

約数和(自身を除く): 9467433

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4271, 4953, 12813, 55523, 166569, 542417, 1627251, 7051421, 21154263]

約数ペア:

[(1, 21154263), (3, 7051421), (13, 1627251), (39, 542417), (127, 166569), (381, 55523), (1651, 12813), (4271, 4953)]