21378744

素因数分解:

$2^3\times 3^2\times {\mathrm{263}}^1\times {\mathrm{1129}}^1$

素因数の和:1404

約数の個数: 48

約数和(自身を含む): 58172400

約数和(自身を除く): 36793656

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 263, 526, 789, 1052, 1129, 1578, 2104, 2258, 2367, 3156, 3387, 4516, 4734, 6312, 6774, 9032, 9468, 10161, 13548, 18936, 20322, 27096, 40644, 81288, 296927, 593854, 890781, 1187708, 1781562, 2375416, 2672343, 3563124, 5344686, 7126248, 10689372, 21378744]

約数ペア:

[(1, 21378744), (2, 10689372), (3, 7126248), (4, 5344686), (6, 3563124), (8, 2672343), (9, 2375416), (12, 1781562), (18, 1187708), (24, 890781), (36, 593854), (72, 296927), (263, 81288), (526, 40644), (789, 27096), (1052, 20322), (1129, 18936), (1578, 13548), (2104, 10161), (2258, 9468), (2367, 9032), (3156, 6774), (3387, 6312), (4516, 4734)]