21424000

素因数分解:

$2^7\times 5^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 57919680

約数和(自身を除く): 36495680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 103, 104, 125, 128, 130, 160, 200, 206, 208, 250, 260, 320, 325, 400, 412, 416, 500, 515, 520, 640, 650, 800, 824, 832, 1000, 1030, 1040, 1300, 1339, 1600, 1625, 1648, 1664, 2000, 2060, 2080, 2575, 2600, 2678, 3200, 3250, 3296, 4000, 4120, 4160, 5150, 5200, 5356, 6500, 6592, 6695, 8000, 8240, 8320, 10300, 10400, 10712, 12875, 13000, 13184, 13390, 16000, 16480, 20600, 20800, 21424, 25750, 26000, 26780, 32960, 33475, 41200, 41600, 42848, 51500, 52000, 53560, 65920, 66950, 82400, 85696, 103000, 104000, 107120, 133900, 164800, 167375, 171392, 206000, 208000, 214240, 267800, 329600, 334750, 412000, 428480, 535600, 669500, 824000, 856960, 1071200, 1339000, 1648000, 2142400, 2678000, 4284800, 5356000, 10712000, 21424000]

約数ペア:

[(1, 21424000), (2, 10712000), (4, 5356000), (5, 4284800), (8, 2678000), (10, 2142400), (13, 1648000), (16, 1339000), (20, 1071200), (25, 856960), (26, 824000), (32, 669500), (40, 535600), (50, 428480), (52, 412000), (64, 334750), (65, 329600), (80, 267800), (100, 214240), (103, 208000), (104, 206000), (125, 171392), (128, 167375), (130, 164800), (160, 133900), (200, 107120), (206, 104000), (208, 103000), (250, 85696), (260, 82400), (320, 66950), (325, 65920), (400, 53560), (412, 52000), (416, 51500), (500, 42848), (515, 41600), (520, 41200), (640, 33475), (650, 32960), (800, 26780), (824, 26000), (832, 25750), (1000, 21424), (1030, 20800), (1040, 20600), (1300, 16480), (1339, 16000), (1600, 13390), (1625, 13184), (1648, 13000), (1664, 12875), (2000, 10712), (2060, 10400), (2080, 10300), (2575, 8320), (2600, 8240), (2678, 8000), (3200, 6695), (3250, 6592), (3296, 6500), (4000, 5356), (4120, 5200), (4160, 5150)]