21657129

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{7607}}^1$

素因数の和:7696

約数の個数: 16

約数和(自身を含む): 31527552

約数和(自身を除く): 9870423

約数列:

[1, 3, 13, 39, 73, 219, 949, 2847, 7607, 22821, 98891, 296673, 555311, 1665933, 7219043, 21657129]

約数ペア:

[(1, 21657129), (3, 7219043), (13, 1665933), (39, 555311), (73, 296673), (219, 98891), (949, 22821), (2847, 7607)]