51987040

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:397

約数の個数: 144

約数和(自身を含む): 150822000

約数和(自身を除く): 98834960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 160, 190, 196, 224, 245, 266, 280, 304, 349, 380, 392, 490, 532, 560, 608, 665, 698, 760, 784, 931, 980, 1064, 1120, 1330, 1396, 1520, 1568, 1745, 1862, 1960, 2128, 2443, 2660, 2792, 3040, 3490, 3724, 3920, 4256, 4655, 4886, 5320, 5584, 6631, 6980, 7448, 7840, 9310, 9772, 10640, 11168, 12215, 13262, 13960, 14896, 17101, 18620, 19544, 21280, 24430, 26524, 27920, 29792, 33155, 34202, 37240, 39088, 46417, 48860, 53048, 55840, 66310, 68404, 74480, 78176, 85505, 92834, 97720, 106096, 132620, 136808, 148960, 171010, 185668, 195440, 212192, 232085, 265240, 273616, 324919, 342020, 371336, 390880, 464170, 530480, 547232, 649838, 684040, 742672, 928340, 1060960, 1299676, 1368080, 1485344, 1624595, 1856680, 2599352, 2736160, 3249190, 3713360, 5198704, 6498380, 7426720, 10397408, 12996760, 25993520, 51987040]

約数ペア:

[(1, 51987040), (2, 25993520), (4, 12996760), (5, 10397408), (7, 7426720), (8, 6498380), (10, 5198704), (14, 3713360), (16, 3249190), (19, 2736160), (20, 2599352), (28, 1856680), (32, 1624595), (35, 1485344), (38, 1368080), (40, 1299676), (49, 1060960), (56, 928340), (70, 742672), (76, 684040), (80, 649838), (95, 547232), (98, 530480), (112, 464170), (133, 390880), (140, 371336), (152, 342020), (160, 324919), (190, 273616), (196, 265240), (224, 232085), (245, 212192), (266, 195440), (280, 185668), (304, 171010), (349, 148960), (380, 136808), (392, 132620), (490, 106096), (532, 97720), (560, 92834), (608, 85505), (665, 78176), (698, 74480), (760, 68404), (784, 66310), (931, 55840), (980, 53048), (1064, 48860), (1120, 46417), (1330, 39088), (1396, 37240), (1520, 34202), (1568, 33155), (1745, 29792), (1862, 27920), (1960, 26524), (2128, 24430), (2443, 21280), (2660, 19544), (2792, 18620), (3040, 17101), (3490, 14896), (3724, 13960), (3920, 13262), (4256, 12215), (4655, 11168), (4886, 10640), (5320, 9772), (5584, 9310), (6631, 7840), (6980, 7448)]