21371284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6841}}^1$

素因数の和:6927

約数の個数: 24

約数和(自身を含む): 41380416

約数和(自身を除く): 20009132

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6841, 13682, 27364, 75251, 150502, 301004, 485711, 971422, 1942844, 5342821, 10685642, 21371284]

約数ペア:

[(1, 21371284), (2, 10685642), (4, 5342821), (11, 1942844), (22, 971422), (44, 485711), (71, 301004), (142, 150502), (284, 75251), (781, 27364), (1562, 13682), (3124, 6841)]