20881795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{1213}}^1$

素因数の和:1542

約数の個数: 16

約数和(自身を含む): 27446112

約数和(自身を除く): 6564317

約数列:

[1, 5, 11, 55, 313, 1213, 1565, 3443, 6065, 13343, 17215, 66715, 379669, 1898345, 4176359, 20881795]

約数ペア:

[(1, 20881795), (5, 4176359), (11, 1898345), (55, 379669), (313, 66715), (1213, 17215), (1565, 13343), (3443, 6065)]