21685400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9857}}^1$

素因数の和:9884

約数の個数: 48

約数和(自身を含む): 55007640

約数和(自身を除く): 33322240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9857, 19714, 39428, 49285, 78856, 98570, 108427, 197140, 216854, 246425, 394280, 433708, 492850, 542135, 867416, 985700, 1084270, 1971400, 2168540, 2710675, 4337080, 5421350, 10842700, 21685400]

約数ペア:

[(1, 21685400), (2, 10842700), (4, 5421350), (5, 4337080), (8, 2710675), (10, 2168540), (11, 1971400), (20, 1084270), (22, 985700), (25, 867416), (40, 542135), (44, 492850), (50, 433708), (55, 394280), (88, 246425), (100, 216854), (110, 197140), (200, 108427), (220, 98570), (275, 78856), (440, 49285), (550, 39428), (1100, 19714), (2200, 9857)]