21021120

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{811}}^1$

素因数の和:840

約数の個数: 140

約数和(自身を含む): 74868024

約数和(自身を除く): 53846904

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, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 405, 432, 480, 540, 576, 648, 720, 810, 811, 864, 960, 1080, 1296, 1440, 1620, 1622, 1728, 2160, 2433, 2592, 2880, 3240, 3244, 4055, 4320, 4866, 5184, 6480, 6488, 7299, 8110, 8640, 9732, 12165, 12960, 12976, 14598, 16220, 19464, 21897, 24330, 25920, 25952, 29196, 32440, 36495, 38928, 43794, 48660, 51904, 58392, 64880, 65691, 72990, 77856, 87588, 97320, 109485, 116784, 129760, 131382, 145980, 155712, 175176, 194640, 218970, 233568, 259520, 262764, 291960, 328455, 350352, 389280, 437940, 467136, 525528, 583920, 656910, 700704, 778560, 875880, 1051056, 1167840, 1313820, 1401408, 1751760, 2102112, 2335680, 2627640, 3503520, 4204224, 5255280, 7007040, 10510560, 21021120]

約数ペア:

[(1, 21021120), (2, 10510560), (3, 7007040), (4, 5255280), (5, 4204224), (6, 3503520), (8, 2627640), (9, 2335680), (10, 2102112), (12, 1751760), (15, 1401408), (16, 1313820), (18, 1167840), (20, 1051056), (24, 875880), (27, 778560), (30, 700704), (32, 656910), (36, 583920), (40, 525528), (45, 467136), (48, 437940), (54, 389280), (60, 350352), (64, 328455), (72, 291960), (80, 262764), (81, 259520), (90, 233568), (96, 218970), (108, 194640), (120, 175176), (135, 155712), (144, 145980), (160, 131382), (162, 129760), (180, 116784), (192, 109485), (216, 97320), (240, 87588), (270, 77856), (288, 72990), (320, 65691), (324, 64880), (360, 58392), (405, 51904), (432, 48660), (480, 43794), (540, 38928), (576, 36495), (648, 32440), (720, 29196), (810, 25952), (811, 25920), (864, 24330), (960, 21897), (1080, 19464), (1296, 16220), (1440, 14598), (1620, 12976), (1622, 12960), (1728, 12165), (2160, 9732), (2433, 8640), (2592, 8110), (2880, 7299), (3240, 6488), (3244, 6480), (4055, 5184), (4320, 4866)]