21956960

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1259}}^1$

素因数の和:1383

約数の個数: 48

約数和(自身を含む): 52390800

約数和(自身を除く): 30433840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1090, 1259, 1744, 2180, 2518, 3488, 4360, 5036, 6295, 8720, 10072, 12590, 17440, 20144, 25180, 40288, 50360, 100720, 137231, 201440, 274462, 548924, 686155, 1097848, 1372310, 2195696, 2744620, 4391392, 5489240, 10978480, 21956960]

約数ペア:

[(1, 21956960), (2, 10978480), (4, 5489240), (5, 4391392), (8, 2744620), (10, 2195696), (16, 1372310), (20, 1097848), (32, 686155), (40, 548924), (80, 274462), (109, 201440), (160, 137231), (218, 100720), (436, 50360), (545, 40288), (872, 25180), (1090, 20144), (1259, 17440), (1744, 12590), (2180, 10072), (2518, 8720), (3488, 6295), (4360, 5036)]