21262565

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{523}}^1$

素因数の和:748

約数の個数: 16

約数和(自身を含む): 26258688

約数和(自身を除く): 4996123

約数列:

[1, 5, 47, 173, 235, 523, 865, 2615, 8131, 24581, 40655, 90479, 122905, 452395, 4252513, 21262565]

約数ペア:

[(1, 21262565), (5, 4252513), (47, 452395), (173, 122905), (235, 90479), (523, 40655), (865, 24581), (2615, 8131)]