21956828

素因数分解:

$2^2\times {\mathrm{29}}^2\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:230

約数の個数: 36

約数和(自身を含む): 40825512

約数和(自身を除く): 18868684

約数列:

[1, 2, 4, 29, 58, 61, 107, 116, 122, 214, 244, 428, 841, 1682, 1769, 3103, 3364, 3538, 6206, 6527, 7076, 12412, 13054, 26108, 51301, 89987, 102602, 179974, 189283, 205204, 359948, 378566, 757132, 5489207, 10978414, 21956828]

約数ペア:

[(1, 21956828), (2, 10978414), (4, 5489207), (29, 757132), (58, 378566), (61, 359948), (107, 205204), (116, 189283), (122, 179974), (214, 102602), (244, 89987), (428, 51301), (841, 26108), (1682, 13054), (1769, 12412), (3103, 7076), (3364, 6527), (3538, 6206)]