20998383

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13216017

約数列:

[1, 3, 7, 17, 21, 51, 119, 131, 357, 393, 449, 917, 1347, 2227, 2751, 3143, 6681, 7633, 9429, 15589, 22899, 46767, 53431, 58819, 160293, 176457, 411733, 999923, 1235199, 2999769, 6999461, 20998383]

約数ペア:

[(1, 20998383), (3, 6999461), (7, 2999769), (17, 1235199), (21, 999923), (51, 411733), (119, 176457), (131, 160293), (357, 58819), (393, 53431), (449, 46767), (917, 22899), (1347, 15589), (2227, 9429), (2751, 7633), (3143, 6681)]