21990903

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{2089}}^1$

素因数の和:2143

約数の個数: 24

約数和(自身を含む): 33356400

約数和(自身を除く): 11365497

約数列:

[1, 3, 11, 29, 33, 87, 121, 319, 363, 957, 2089, 3509, 6267, 10527, 22979, 60581, 68937, 181743, 252769, 666391, 758307, 1999173, 7330301, 21990903]

約数ペア:

[(1, 21990903), (3, 7330301), (11, 1999173), (29, 758307), (33, 666391), (87, 252769), (121, 181743), (319, 68937), (363, 60581), (957, 22979), (2089, 10527), (3509, 6267)]