21707840

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{881}}^1$

素因数の和:916

約数の個数: 112

約数和(自身を含む): 64520064

約数和(自身を除く): 42812224

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 320, 352, 385, 440, 448, 560, 616, 704, 770, 880, 881, 1120, 1232, 1540, 1760, 1762, 2240, 2464, 3080, 3520, 3524, 4405, 4928, 6160, 6167, 7048, 8810, 9691, 12320, 12334, 14096, 17620, 19382, 24640, 24668, 28192, 30835, 35240, 38764, 48455, 49336, 56384, 61670, 67837, 70480, 77528, 96910, 98672, 123340, 135674, 140960, 155056, 193820, 197344, 246680, 271348, 281920, 310112, 339185, 387640, 394688, 493360, 542696, 620224, 678370, 775280, 986720, 1085392, 1356740, 1550560, 1973440, 2170784, 2713480, 3101120, 4341568, 5426960, 10853920, 21707840]

約数ペア:

[(1, 21707840), (2, 10853920), (4, 5426960), (5, 4341568), (7, 3101120), (8, 2713480), (10, 2170784), (11, 1973440), (14, 1550560), (16, 1356740), (20, 1085392), (22, 986720), (28, 775280), (32, 678370), (35, 620224), (40, 542696), (44, 493360), (55, 394688), (56, 387640), (64, 339185), (70, 310112), (77, 281920), (80, 271348), (88, 246680), (110, 197344), (112, 193820), (140, 155056), (154, 140960), (160, 135674), (176, 123340), (220, 98672), (224, 96910), (280, 77528), (308, 70480), (320, 67837), (352, 61670), (385, 56384), (440, 49336), (448, 48455), (560, 38764), (616, 35240), (704, 30835), (770, 28192), (880, 24668), (881, 24640), (1120, 19382), (1232, 17620), (1540, 14096), (1760, 12334), (1762, 12320), (2240, 9691), (2464, 8810), (3080, 7048), (3520, 6167), (3524, 6160), (4405, 4928)]