21000659361

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{250841}}^1$

素因数の和:250957

約数の個数: 32

約数和(自身を含む): 31786698240

約数和(自身を除く): 10786038879

約数列:

[1, 3, 11, 33, 43, 59, 129, 177, 473, 649, 1419, 1947, 2537, 7611, 27907, 83721, 250841, 752523, 2759251, 8277753, 10786163, 14799619, 32358489, 44398857, 118647793, 162795809, 355943379, 488387427, 636383617, 1909150851, 7000219787, 21000659361]

約数ペア:

[(1, 21000659361), (3, 7000219787), (11, 1909150851), (33, 636383617), (43, 488387427), (59, 355943379), (129, 162795809), (177, 118647793), (473, 44398857), (649, 32358489), (1419, 14799619), (1947, 10786163), (2537, 8277753), (7611, 2759251), (27907, 752523), (83721, 250841)]