21454920981

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61125131}}^1$

素因数の和:61125153

約数の個数: 16

約数和(自身を含む): 34230073920

約数和(自身を除く): 12775152939

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61125131, 183375393, 550126179, 794626703, 1650378537, 2383880109, 7151640327, 21454920981]

約数ペア:

[(1, 21454920981), (3, 7151640327), (9, 2383880109), (13, 1650378537), (27, 794626703), (39, 550126179), (117, 183375393), (351, 61125131)]