20500705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{2003}}^1$

素因数の和:2120

約数の個数: 16

約数和(自身を含む): 25971840

約数和(自身を除く): 5471135

約数列:

[1, 5, 23, 89, 115, 445, 2003, 2047, 10015, 10235, 46069, 178267, 230345, 891335, 4100141, 20500705]

約数ペア:

[(1, 20500705), (5, 4100141), (23, 891335), (89, 230345), (115, 178267), (445, 46069), (2003, 10235), (2047, 10015)]