21721887

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{701}}^1$

素因数の和:1031

約数の個数: 24

約数和(自身を含む): 34386768

約数和(自身を除く): 12664881

約数列:

[1, 3, 9, 11, 33, 99, 313, 701, 939, 2103, 2817, 3443, 6309, 7711, 10329, 23133, 30987, 69399, 219413, 658239, 1974717, 2413543, 7240629, 21721887]

約数ペア:

[(1, 21721887), (3, 7240629), (9, 2413543), (11, 1974717), (33, 658239), (99, 219413), (313, 69399), (701, 30987), (939, 23133), (2103, 10329), (2817, 7711), (3443, 6309)]