21737727

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:841

約数の個数: 40

約数和(自身を含む): 36613632

約数和(自身を除く): 14875905

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 279, 297, 341, 787, 837, 891, 1023, 2361, 2511, 3069, 7083, 8657, 9207, 21249, 24397, 25971, 27621, 63747, 73191, 77913, 219573, 233739, 268367, 658719, 701217, 805101, 1976157, 2415303, 7245909, 21737727]

約数ペア:

[(1, 21737727), (3, 7245909), (9, 2415303), (11, 1976157), (27, 805101), (31, 701217), (33, 658719), (81, 268367), (93, 233739), (99, 219573), (279, 77913), (297, 73191), (341, 63747), (787, 27621), (837, 25971), (891, 24397), (1023, 21249), (2361, 9207), (2511, 8657), (3069, 7083)]