21938815

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1523}}^1$

素因数の和:1638

約数の個数: 16

約数和(自身を含む): 27358848

約数和(自身を除く): 5420033

約数列:

[1, 5, 43, 67, 215, 335, 1523, 2881, 7615, 14405, 65489, 102041, 327445, 510205, 4387763, 21938815]

約数ペア:

[(1, 21938815), (5, 4387763), (43, 510205), (67, 327445), (215, 102041), (335, 65489), (1523, 14405), (2881, 7615)]