19680111

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:153

約数の個数: 64

約数和(自身を含む): 34467840

約数和(自身を除く): 14787729

約数列:

[1, 3, 9, 11, 23, 27, 33, 43, 67, 69, 99, 129, 201, 207, 253, 297, 387, 473, 603, 621, 737, 759, 989, 1161, 1419, 1541, 1809, 2211, 2277, 2881, 2967, 4257, 4623, 6633, 6831, 8643, 8901, 10879, 12771, 13869, 16951, 19899, 25929, 26703, 31691, 32637, 41607, 50853, 66263, 77787, 95073, 97911, 152559, 198789, 285219, 293733, 457677, 596367, 728893, 855657, 1789101, 2186679, 6560037, 19680111]

約数ペア:

[(1, 19680111), (3, 6560037), (9, 2186679), (11, 1789101), (23, 855657), (27, 728893), (33, 596367), (43, 457677), (67, 293733), (69, 285219), (99, 198789), (129, 152559), (201, 97911), (207, 95073), (253, 77787), (297, 66263), (387, 50853), (473, 41607), (603, 32637), (621, 31691), (737, 26703), (759, 25929), (989, 19899), (1161, 16951), (1419, 13869), (1541, 12771), (1809, 10879), (2211, 8901), (2277, 8643), (2881, 6831), (2967, 6633), (4257, 4623)]