21392640

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{619}}^1$

素因数の和:649

約数の個数: 144

約数和(自身を含む): 76036800

約数和(自身を除く): 54644160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 619, 640, 720, 768, 864, 960, 1080, 1152, 1238, 1280, 1440, 1728, 1857, 1920, 2160, 2304, 2476, 2880, 3095, 3456, 3714, 3840, 4320, 4952, 5571, 5760, 6190, 6912, 7428, 8640, 9285, 9904, 11142, 11520, 12380, 14856, 16713, 17280, 18570, 19808, 22284, 24760, 27855, 29712, 33426, 34560, 37140, 39616, 44568, 49520, 55710, 59424, 66852, 74280, 79232, 83565, 89136, 99040, 111420, 118848, 133704, 148560, 158464, 167130, 178272, 198080, 222840, 237696, 267408, 297120, 334260, 356544, 396160, 445680, 475392, 534816, 594240, 668520, 713088, 792320, 891360, 1069632, 1188480, 1337040, 1426176, 1782720, 2139264, 2376960, 2674080, 3565440, 4278528, 5348160, 7130880, 10696320, 21392640]

約数ペア:

[(1, 21392640), (2, 10696320), (3, 7130880), (4, 5348160), (5, 4278528), (6, 3565440), (8, 2674080), (9, 2376960), (10, 2139264), (12, 1782720), (15, 1426176), (16, 1337040), (18, 1188480), (20, 1069632), (24, 891360), (27, 792320), (30, 713088), (32, 668520), (36, 594240), (40, 534816), (45, 475392), (48, 445680), (54, 396160), (60, 356544), (64, 334260), (72, 297120), (80, 267408), (90, 237696), (96, 222840), (108, 198080), (120, 178272), (128, 167130), (135, 158464), (144, 148560), (160, 133704), (180, 118848), (192, 111420), (216, 99040), (240, 89136), (256, 83565), (270, 79232), (288, 74280), (320, 66852), (360, 59424), (384, 55710), (432, 49520), (480, 44568), (540, 39616), (576, 37140), (619, 34560), (640, 33426), (720, 29712), (768, 27855), (864, 24760), (960, 22284), (1080, 19808), (1152, 18570), (1238, 17280), (1280, 16713), (1440, 14856), (1728, 12380), (1857, 11520), (1920, 11142), (2160, 9904), (2304, 9285), (2476, 8640), (2880, 7428), (3095, 6912), (3456, 6190), (3714, 5760), (3840, 5571), (4320, 4952)]