20992320

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 168

約数和(自身を含む): 74532744

約数和(自身を除く): 53540424

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 37, 40, 45, 48, 60, 64, 72, 74, 80, 90, 96, 111, 120, 144, 148, 160, 180, 185, 192, 197, 222, 240, 288, 296, 320, 333, 360, 370, 394, 444, 480, 555, 576, 591, 592, 666, 720, 740, 788, 888, 960, 985, 1110, 1182, 1184, 1332, 1440, 1480, 1576, 1665, 1773, 1776, 1970, 2220, 2364, 2368, 2664, 2880, 2955, 2960, 3152, 3330, 3546, 3552, 3940, 4440, 4728, 5328, 5910, 5920, 6304, 6660, 7092, 7104, 7289, 7880, 8865, 8880, 9456, 10656, 11820, 11840, 12608, 13320, 14184, 14578, 15760, 17730, 17760, 18912, 21312, 21867, 23640, 26640, 28368, 29156, 31520, 35460, 35520, 36445, 37824, 43734, 47280, 53280, 56736, 58312, 63040, 65601, 70920, 72890, 87468, 94560, 106560, 109335, 113472, 116624, 131202, 141840, 145780, 174936, 189120, 218670, 233248, 262404, 283680, 291560, 328005, 349872, 437340, 466496, 524808, 567360, 583120, 656010, 699744, 874680, 1049616, 1166240, 1312020, 1399488, 1749360, 2099232, 2332480, 2624040, 3498720, 4198464, 5248080, 6997440, 10496160, 20992320]

約数ペア:

[(1, 20992320), (2, 10496160), (3, 6997440), (4, 5248080), (5, 4198464), (6, 3498720), (8, 2624040), (9, 2332480), (10, 2099232), (12, 1749360), (15, 1399488), (16, 1312020), (18, 1166240), (20, 1049616), (24, 874680), (30, 699744), (32, 656010), (36, 583120), (37, 567360), (40, 524808), (45, 466496), (48, 437340), (60, 349872), (64, 328005), (72, 291560), (74, 283680), (80, 262404), (90, 233248), (96, 218670), (111, 189120), (120, 174936), (144, 145780), (148, 141840), (160, 131202), (180, 116624), (185, 113472), (192, 109335), (197, 106560), (222, 94560), (240, 87468), (288, 72890), (296, 70920), (320, 65601), (333, 63040), (360, 58312), (370, 56736), (394, 53280), (444, 47280), (480, 43734), (555, 37824), (576, 36445), (591, 35520), (592, 35460), (666, 31520), (720, 29156), (740, 28368), (788, 26640), (888, 23640), (960, 21867), (985, 21312), (1110, 18912), (1182, 17760), (1184, 17730), (1332, 15760), (1440, 14578), (1480, 14184), (1576, 13320), (1665, 12608), (1773, 11840), (1776, 11820), (1970, 10656), (2220, 9456), (2364, 8880), (2368, 8865), (2664, 7880), (2880, 7289), (2955, 7104), (2960, 7092), (3152, 6660), (3330, 6304), (3546, 5920), (3552, 5910), (3940, 5328), (4440, 4728)]