19968000

素因数分解:

$2^{12}\times 3^1\times 5^3\times {\mathrm{13}}^1$

素因数の和:55

約数の個数: 208

約数和(自身を含む): 71556576

約数和(自身を除く): 51588576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 48, 50, 52, 60, 64, 65, 75, 78, 80, 96, 100, 104, 120, 125, 128, 130, 150, 156, 160, 192, 195, 200, 208, 240, 250, 256, 260, 300, 312, 320, 325, 375, 384, 390, 400, 416, 480, 500, 512, 520, 600, 624, 640, 650, 750, 768, 780, 800, 832, 960, 975, 1000, 1024, 1040, 1200, 1248, 1280, 1300, 1500, 1536, 1560, 1600, 1625, 1664, 1920, 1950, 2000, 2048, 2080, 2400, 2496, 2560, 2600, 3000, 3072, 3120, 3200, 3250, 3328, 3840, 3900, 4000, 4096, 4160, 4800, 4875, 4992, 5120, 5200, 6000, 6144, 6240, 6400, 6500, 6656, 7680, 7800, 8000, 8320, 9600, 9750, 9984, 10240, 10400, 12000, 12288, 12480, 12800, 13000, 13312, 15360, 15600, 16000, 16640, 19200, 19500, 19968, 20480, 20800, 24000, 24960, 25600, 26000, 26624, 30720, 31200, 32000, 33280, 38400, 39000, 39936, 41600, 48000, 49920, 51200, 52000, 53248, 61440, 62400, 64000, 66560, 76800, 78000, 79872, 83200, 96000, 99840, 102400, 104000, 124800, 128000, 133120, 153600, 156000, 159744, 166400, 192000, 199680, 208000, 249600, 256000, 266240, 307200, 312000, 332800, 384000, 399360, 416000, 499200, 512000, 624000, 665600, 768000, 798720, 832000, 998400, 1248000, 1331200, 1536000, 1664000, 1996800, 2496000, 3328000, 3993600, 4992000, 6656000, 9984000, 19968000]

約数ペア:

[(1, 19968000), (2, 9984000), (3, 6656000), (4, 4992000), (5, 3993600), (6, 3328000), (8, 2496000), (10, 1996800), (12, 1664000), (13, 1536000), (15, 1331200), (16, 1248000), (20, 998400), (24, 832000), (25, 798720), (26, 768000), (30, 665600), (32, 624000), (39, 512000), (40, 499200), (48, 416000), (50, 399360), (52, 384000), (60, 332800), (64, 312000), (65, 307200), (75, 266240), (78, 256000), (80, 249600), (96, 208000), (100, 199680), (104, 192000), (120, 166400), (125, 159744), (128, 156000), (130, 153600), (150, 133120), (156, 128000), (160, 124800), (192, 104000), (195, 102400), (200, 99840), (208, 96000), (240, 83200), (250, 79872), (256, 78000), (260, 76800), (300, 66560), (312, 64000), (320, 62400), (325, 61440), (375, 53248), (384, 52000), (390, 51200), (400, 49920), (416, 48000), (480, 41600), (500, 39936), (512, 39000), (520, 38400), (600, 33280), (624, 32000), (640, 31200), (650, 30720), (750, 26624), (768, 26000), (780, 25600), (800, 24960), (832, 24000), (960, 20800), (975, 20480), (1000, 19968), (1024, 19500), (1040, 19200), (1200, 16640), (1248, 16000), (1280, 15600), (1300, 15360), (1500, 13312), (1536, 13000), (1560, 12800), (1600, 12480), (1625, 12288), (1664, 12000), (1920, 10400), (1950, 10240), (2000, 9984), (2048, 9750), (2080, 9600), (2400, 8320), (2496, 8000), (2560, 7800), (2600, 7680), (3000, 6656), (3072, 6500), (3120, 6400), (3200, 6240), (3250, 6144), (3328, 6000), (3840, 5200), (3900, 5120), (4000, 4992), (4096, 4875), (4160, 4800)]