21293961

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11617}}^1$

素因数の和:11680

約数の個数: 16

約数和(自身を含む): 31229184

約数和(自身を除く): 9935223

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11617, 34851, 151021, 453063, 545999, 1637997, 7097987, 21293961]

約数ペア:

[(1, 21293961), (3, 7097987), (13, 1637997), (39, 545999), (47, 453063), (141, 151021), (611, 34851), (1833, 11617)]