21289983

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49627}}^1$

素因数の和:49654

約数の個数: 16

約数和(自身を含む): 33350016

約数和(自身を除く): 12060033

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49627, 148881, 545897, 645151, 1637691, 1935453, 7096661, 21289983]

約数ペア:

[(1, 21289983), (3, 7096661), (11, 1935453), (13, 1637691), (33, 645151), (39, 545897), (143, 148881), (429, 49627)]