20809701

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:322

約数の個数: 36

約数和(自身を含む): 33549516

約数和(自身を除く): 12739815

約数列:

[1, 3, 9, 11, 33, 97, 99, 121, 197, 291, 363, 591, 873, 1067, 1089, 1773, 2167, 3201, 6501, 9603, 11737, 19109, 19503, 23837, 35211, 57327, 71511, 105633, 171981, 210199, 214533, 630597, 1891791, 2312189, 6936567, 20809701]

約数ペア:

[(1, 20809701), (3, 6936567), (9, 2312189), (11, 1891791), (33, 630597), (97, 214533), (99, 210199), (121, 171981), (197, 105633), (291, 71511), (363, 57327), (591, 35211), (873, 23837), (1067, 19503), (1089, 19109), (1773, 11737), (2167, 9603), (3201, 6501)]