21408000

素因数分解:

$2^8\times 3^1\times 5^3\times {\mathrm{223}}^1$

素因数の和:257

約数の個数: 144

約数和(自身を含む): 71425536

約数和(自身を除く): 50017536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 120, 125, 128, 150, 160, 192, 200, 223, 240, 250, 256, 300, 320, 375, 384, 400, 446, 480, 500, 600, 640, 669, 750, 768, 800, 892, 960, 1000, 1115, 1200, 1280, 1338, 1500, 1600, 1784, 1920, 2000, 2230, 2400, 2676, 3000, 3200, 3345, 3568, 3840, 4000, 4460, 4800, 5352, 5575, 6000, 6400, 6690, 7136, 8000, 8920, 9600, 10704, 11150, 12000, 13380, 14272, 16000, 16725, 17840, 19200, 21408, 22300, 24000, 26760, 27875, 28544, 32000, 33450, 35680, 42816, 44600, 48000, 53520, 55750, 57088, 66900, 71360, 83625, 85632, 89200, 96000, 107040, 111500, 133800, 142720, 167250, 171264, 178400, 214080, 223000, 267600, 285440, 334500, 356800, 428160, 446000, 535200, 669000, 713600, 856320, 892000, 1070400, 1338000, 1427200, 1784000, 2140800, 2676000, 3568000, 4281600, 5352000, 7136000, 10704000, 21408000]

約数ペア:

[(1, 21408000), (2, 10704000), (3, 7136000), (4, 5352000), (5, 4281600), (6, 3568000), (8, 2676000), (10, 2140800), (12, 1784000), (15, 1427200), (16, 1338000), (20, 1070400), (24, 892000), (25, 856320), (30, 713600), (32, 669000), (40, 535200), (48, 446000), (50, 428160), (60, 356800), (64, 334500), (75, 285440), (80, 267600), (96, 223000), (100, 214080), (120, 178400), (125, 171264), (128, 167250), (150, 142720), (160, 133800), (192, 111500), (200, 107040), (223, 96000), (240, 89200), (250, 85632), (256, 83625), (300, 71360), (320, 66900), (375, 57088), (384, 55750), (400, 53520), (446, 48000), (480, 44600), (500, 42816), (600, 35680), (640, 33450), (669, 32000), (750, 28544), (768, 27875), (800, 26760), (892, 24000), (960, 22300), (1000, 21408), (1115, 19200), (1200, 17840), (1280, 16725), (1338, 16000), (1500, 14272), (1600, 13380), (1784, 12000), (1920, 11150), (2000, 10704), (2230, 9600), (2400, 8920), (2676, 8000), (3000, 7136), (3200, 6690), (3345, 6400), (3568, 6000), (3840, 5575), (4000, 5352), (4460, 4800)]