21908799

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 36334848

約数和(自身を除く): 14426049

約数列:

[1, 3, 9, 11, 27, 33, 67, 81, 99, 201, 297, 367, 603, 737, 891, 1101, 1809, 2211, 3303, 4037, 5427, 6633, 9909, 12111, 19899, 24589, 29727, 36333, 59697, 73767, 108999, 221301, 270479, 326997, 663903, 811437, 1991709, 2434311, 7302933, 21908799]

約数ペア:

[(1, 21908799), (3, 7302933), (9, 2434311), (11, 1991709), (27, 811437), (33, 663903), (67, 326997), (81, 270479), (99, 221301), (201, 108999), (297, 73767), (367, 59697), (603, 36333), (737, 29727), (891, 24589), (1101, 19899), (1809, 12111), (2211, 9909), (3303, 6633), (4037, 5427)]