21100743

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2927}}^1$

素因数の和:3028

約数の個数: 20

約数和(自身を含む): 31885920

約数和(自身を除く): 10785177

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2927, 7209, 8781, 26343, 79029, 237087, 260503, 781509, 2344527, 7033581, 21100743]

約数ペア:

[(1, 21100743), (3, 7033581), (9, 2344527), (27, 781509), (81, 260503), (89, 237087), (267, 79029), (801, 26343), (2403, 8781), (2927, 7209)]