20217978

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{337}}^1$

素因数の和:460

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 29427462

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 99, 101, 198, 202, 297, 303, 337, 594, 606, 674, 909, 1011, 1111, 1818, 2022, 2222, 2727, 3033, 3333, 3707, 5454, 6066, 6666, 7414, 9099, 9999, 11121, 18198, 19998, 22242, 29997, 33363, 34037, 59994, 66726, 68074, 100089, 102111, 200178, 204222, 306333, 374407, 612666, 748814, 918999, 1123221, 1837998, 2246442, 3369663, 6739326, 10108989, 20217978]

約数ペア:

[(1, 20217978), (2, 10108989), (3, 6739326), (6, 3369663), (9, 2246442), (11, 1837998), (18, 1123221), (22, 918999), (27, 748814), (33, 612666), (54, 374407), (66, 306333), (99, 204222), (101, 200178), (198, 102111), (202, 100089), (297, 68074), (303, 66726), (337, 59994), (594, 34037), (606, 33363), (674, 29997), (909, 22242), (1011, 19998), (1111, 18198), (1818, 11121), (2022, 9999), (2222, 9099), (2727, 7414), (3033, 6666), (3333, 6066), (3707, 5454)]