20427840

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:237

約数の個数: 168

約数和(自身を含む): 72393048

約数和(自身を除く): 51965208

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 41, 45, 48, 60, 64, 72, 80, 82, 90, 96, 120, 123, 144, 160, 164, 173, 180, 192, 205, 240, 246, 288, 320, 328, 346, 360, 369, 410, 480, 492, 519, 576, 615, 656, 692, 720, 738, 820, 865, 960, 984, 1038, 1230, 1312, 1384, 1440, 1476, 1557, 1640, 1730, 1845, 1968, 2076, 2460, 2595, 2624, 2768, 2880, 2952, 3114, 3280, 3460, 3690, 3936, 4152, 4920, 5190, 5536, 5904, 6228, 6560, 6920, 7093, 7380, 7785, 7872, 8304, 9840, 10380, 11072, 11808, 12456, 13120, 13840, 14186, 14760, 15570, 16608, 19680, 20760, 21279, 23616, 24912, 27680, 28372, 29520, 31140, 33216, 35465, 39360, 41520, 42558, 49824, 55360, 56744, 59040, 62280, 63837, 70930, 83040, 85116, 99648, 106395, 113488, 118080, 124560, 127674, 141860, 166080, 170232, 212790, 226976, 249120, 255348, 283720, 319185, 340464, 425580, 453952, 498240, 510696, 567440, 638370, 680928, 851160, 1021392, 1134880, 1276740, 1361856, 1702320, 2042784, 2269760, 2553480, 3404640, 4085568, 5106960, 6809280, 10213920, 20427840]

約数ペア:

[(1, 20427840), (2, 10213920), (3, 6809280), (4, 5106960), (5, 4085568), (6, 3404640), (8, 2553480), (9, 2269760), (10, 2042784), (12, 1702320), (15, 1361856), (16, 1276740), (18, 1134880), (20, 1021392), (24, 851160), (30, 680928), (32, 638370), (36, 567440), (40, 510696), (41, 498240), (45, 453952), (48, 425580), (60, 340464), (64, 319185), (72, 283720), (80, 255348), (82, 249120), (90, 226976), (96, 212790), (120, 170232), (123, 166080), (144, 141860), (160, 127674), (164, 124560), (173, 118080), (180, 113488), (192, 106395), (205, 99648), (240, 85116), (246, 83040), (288, 70930), (320, 63837), (328, 62280), (346, 59040), (360, 56744), (369, 55360), (410, 49824), (480, 42558), (492, 41520), (519, 39360), (576, 35465), (615, 33216), (656, 31140), (692, 29520), (720, 28372), (738, 27680), (820, 24912), (865, 23616), (960, 21279), (984, 20760), (1038, 19680), (1230, 16608), (1312, 15570), (1384, 14760), (1440, 14186), (1476, 13840), (1557, 13120), (1640, 12456), (1730, 11808), (1845, 11072), (1968, 10380), (2076, 9840), (2460, 8304), (2595, 7872), (2624, 7785), (2768, 7380), (2880, 7093), (2952, 6920), (3114, 6560), (3280, 6228), (3460, 5904), (3690, 5536), (3936, 5190), (4152, 4920)]