21341555440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{881}}^1\times {\mathrm{15937}}^1$

素因数の和:16850

約数の個数: 80

約数和(自身を含む): 52293215520

約数和(自身を除く): 30951660080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 881, 1520, 1762, 3524, 4405, 7048, 8810, 14096, 15937, 16739, 17620, 31874, 33478, 35240, 63748, 66956, 70480, 79685, 83695, 127496, 133912, 159370, 167390, 254992, 267824, 302803, 318740, 334780, 605606, 637480, 669560, 1211212, 1274960, 1339120, 1514015, 2422424, 3028030, 4844848, 6056060, 12112120, 14040497, 24224240, 28080994, 56161988, 70202485, 112323976, 140404970, 224647952, 266769443, 280809940, 533538886, 561619880, 1067077772, 1123239760, 1333847215, 2134155544, 2667694430, 4268311088, 5335388860, 10670777720, 21341555440]

約数ペア:

[(1, 21341555440), (2, 10670777720), (4, 5335388860), (5, 4268311088), (8, 2667694430), (10, 2134155544), (16, 1333847215), (19, 1123239760), (20, 1067077772), (38, 561619880), (40, 533538886), (76, 280809940), (80, 266769443), (95, 224647952), (152, 140404970), (190, 112323976), (304, 70202485), (380, 56161988), (760, 28080994), (881, 24224240), (1520, 14040497), (1762, 12112120), (3524, 6056060), (4405, 4844848), (7048, 3028030), (8810, 2422424), (14096, 1514015), (15937, 1339120), (16739, 1274960), (17620, 1211212), (31874, 669560), (33478, 637480), (35240, 605606), (63748, 334780), (66956, 318740), (70480, 302803), (79685, 267824), (83695, 254992), (127496, 167390), (133912, 159370)]