20888978155

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1129}}^1\times {\mathrm{1511}}^1$

素因数の和:2755

約数の個数: 32

約数和(自身を含む): 26243481600

約数和(自身を除く): 5354503445

約数列:

[1, 5, 31, 79, 155, 395, 1129, 1511, 2449, 5645, 7555, 12245, 34999, 46841, 89191, 119369, 174995, 234205, 445955, 596845, 1705919, 2764921, 3700439, 8529595, 13824605, 18502195, 52883489, 134767601, 264417445, 673838005, 4177795631, 20888978155]

約数ペア:

[(1, 20888978155), (5, 4177795631), (31, 673838005), (79, 264417445), (155, 134767601), (395, 52883489), (1129, 18502195), (1511, 13824605), (2449, 8529595), (5645, 3700439), (7555, 2764921), (12245, 1705919), (34999, 596845), (46841, 445955), (89191, 234205), (119369, 174995)]