21267840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:105

約数の個数: 256

約数和(自身を含む): 79315200

約数和(自身を除く): 58047360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 19, 20, 22, 24, 30, 32, 33, 38, 40, 44, 48, 53, 55, 57, 60, 64, 66, 76, 80, 88, 95, 96, 106, 110, 114, 120, 128, 132, 152, 159, 160, 165, 176, 190, 192, 209, 212, 220, 228, 240, 264, 265, 285, 304, 318, 320, 330, 352, 380, 384, 418, 424, 440, 456, 480, 528, 530, 570, 583, 608, 627, 636, 640, 660, 704, 760, 795, 836, 848, 880, 912, 960, 1007, 1045, 1056, 1060, 1140, 1166, 1216, 1254, 1272, 1320, 1408, 1520, 1590, 1672, 1696, 1749, 1760, 1824, 1920, 2014, 2090, 2112, 2120, 2280, 2332, 2432, 2508, 2544, 2640, 2915, 3021, 3040, 3135, 3180, 3344, 3392, 3498, 3520, 3648, 4028, 4180, 4224, 4240, 4560, 4664, 5016, 5035, 5088, 5280, 5830, 6042, 6080, 6270, 6360, 6688, 6784, 6996, 7040, 7296, 8056, 8360, 8480, 8745, 9120, 9328, 10032, 10070, 10176, 10560, 11077, 11660, 12084, 12160, 12540, 12720, 13376, 13992, 15105, 16112, 16720, 16960, 17490, 18240, 18656, 20064, 20140, 20352, 21120, 22154, 23320, 24168, 25080, 25440, 26752, 27984, 30210, 32224, 33231, 33440, 33920, 34980, 36480, 37312, 40128, 40280, 44308, 46640, 48336, 50160, 50880, 55385, 55968, 60420, 64448, 66462, 66880, 69960, 74624, 80256, 80560, 88616, 93280, 96672, 100320, 101760, 110770, 111936, 120840, 128896, 132924, 133760, 139920, 161120, 166155, 177232, 186560, 193344, 200640, 221540, 223872, 241680, 265848, 279840, 322240, 332310, 354464, 373120, 386688, 401280, 443080, 483360, 531696, 559680, 644480, 664620, 708928, 886160, 966720, 1063392, 1119360, 1329240, 1417856, 1772320, 1933440, 2126784, 2658480, 3544640, 4253568, 5316960, 7089280, 10633920, 21267840]

約数ペア:

[(1, 21267840), (2, 10633920), (3, 7089280), (4, 5316960), (5, 4253568), (6, 3544640), (8, 2658480), (10, 2126784), (11, 1933440), (12, 1772320), (15, 1417856), (16, 1329240), (19, 1119360), (20, 1063392), (22, 966720), (24, 886160), (30, 708928), (32, 664620), (33, 644480), (38, 559680), (40, 531696), (44, 483360), (48, 443080), (53, 401280), (55, 386688), (57, 373120), (60, 354464), (64, 332310), (66, 322240), (76, 279840), (80, 265848), (88, 241680), (95, 223872), (96, 221540), (106, 200640), (110, 193344), (114, 186560), (120, 177232), (128, 166155), (132, 161120), (152, 139920), (159, 133760), (160, 132924), (165, 128896), (176, 120840), (190, 111936), (192, 110770), (209, 101760), (212, 100320), (220, 96672), (228, 93280), (240, 88616), (264, 80560), (265, 80256), (285, 74624), (304, 69960), (318, 66880), (320, 66462), (330, 64448), (352, 60420), (380, 55968), (384, 55385), (418, 50880), (424, 50160), (440, 48336), (456, 46640), (480, 44308), (528, 40280), (530, 40128), (570, 37312), (583, 36480), (608, 34980), (627, 33920), (636, 33440), (640, 33231), (660, 32224), (704, 30210), (760, 27984), (795, 26752), (836, 25440), (848, 25080), (880, 24168), (912, 23320), (960, 22154), (1007, 21120), (1045, 20352), (1056, 20140), (1060, 20064), (1140, 18656), (1166, 18240), (1216, 17490), (1254, 16960), (1272, 16720), (1320, 16112), (1408, 15105), (1520, 13992), (1590, 13376), (1672, 12720), (1696, 12540), (1749, 12160), (1760, 12084), (1824, 11660), (1920, 11077), (2014, 10560), (2090, 10176), (2112, 10070), (2120, 10032), (2280, 9328), (2332, 9120), (2432, 8745), (2508, 8480), (2544, 8360), (2640, 8056), (2915, 7296), (3021, 7040), (3040, 6996), (3135, 6784), (3180, 6688), (3344, 6360), (3392, 6270), (3498, 6080), (3520, 6042), (3648, 5830), (4028, 5280), (4180, 5088), (4224, 5035), (4240, 5016), (4560, 4664)]