21428000

素因数分解:

$2^5\times 5^3\times {\mathrm{11}}^1\times {\mathrm{487}}^1$

素因数の和:523

約数の個数: 96

約数和(自身を含む): 57552768

約数和(自身を除く): 36124768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 125, 160, 176, 200, 220, 250, 275, 352, 400, 440, 487, 500, 550, 800, 880, 974, 1000, 1100, 1375, 1760, 1948, 2000, 2200, 2435, 2750, 3896, 4000, 4400, 4870, 5357, 5500, 7792, 8800, 9740, 10714, 11000, 12175, 15584, 19480, 21428, 22000, 24350, 26785, 38960, 42856, 44000, 48700, 53570, 60875, 77920, 85712, 97400, 107140, 121750, 133925, 171424, 194800, 214280, 243500, 267850, 389600, 428560, 487000, 535700, 669625, 857120, 974000, 1071400, 1339250, 1948000, 2142800, 2678500, 4285600, 5357000, 10714000, 21428000]

約数ペア:

[(1, 21428000), (2, 10714000), (4, 5357000), (5, 4285600), (8, 2678500), (10, 2142800), (11, 1948000), (16, 1339250), (20, 1071400), (22, 974000), (25, 857120), (32, 669625), (40, 535700), (44, 487000), (50, 428560), (55, 389600), (80, 267850), (88, 243500), (100, 214280), (110, 194800), (125, 171424), (160, 133925), (176, 121750), (200, 107140), (220, 97400), (250, 85712), (275, 77920), (352, 60875), (400, 53570), (440, 48700), (487, 44000), (500, 42856), (550, 38960), (800, 26785), (880, 24350), (974, 22000), (1000, 21428), (1100, 19480), (1375, 15584), (1760, 12175), (1948, 11000), (2000, 10714), (2200, 9740), (2435, 8800), (2750, 7792), (3896, 5500), (4000, 5357), (4400, 4870)]