21411271

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 26639520

約数和(自身を除く): 5228249

約数列:

[1, 7, 19, 37, 133, 229, 259, 361, 703, 1603, 2527, 4351, 4921, 8473, 13357, 30457, 59311, 82669, 93499, 160987, 578683, 1126909, 3058753, 21411271]

約数ペア:

[(1, 21411271), (7, 3058753), (19, 1126909), (37, 578683), (133, 160987), (229, 93499), (259, 82669), (361, 59311), (703, 30457), (1603, 13357), (2527, 8473), (4351, 4921)]