20458977

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2857}}^1$

素因数の和:2909

約数の個数: 32

約数和(自身を含む): 35119104

約数和(自身を除く): 14660127

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 217, 231, 341, 651, 1023, 2387, 2857, 7161, 8571, 19999, 31427, 59997, 88567, 94281, 219989, 265701, 619969, 659967, 974237, 1859907, 2922711, 6819659, 20458977]

約数ペア:

[(1, 20458977), (3, 6819659), (7, 2922711), (11, 1859907), (21, 974237), (31, 659967), (33, 619969), (77, 265701), (93, 219989), (217, 94281), (231, 88567), (341, 59997), (651, 31427), (1023, 19999), (2387, 8571), (2857, 7161)]