21503721

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{2213}}^1$

素因数の和:2336

約数の個数: 16

約数和(自身を含む): 29756160

約数和(自身を除く): 8252439

約数列:

[1, 3, 41, 79, 123, 237, 2213, 3239, 6639, 9717, 90733, 174827, 272199, 524481, 7167907, 21503721]

約数ペア:

[(1, 21503721), (3, 7167907), (41, 524481), (79, 272199), (123, 174827), (237, 90733), (2213, 9717), (3239, 6639)]