20907840

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{751}}^1$

素因数の和:800

約数の個数: 112

約数和(自身を含む): 68762880

約数和(自身を除く): 47855040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 32, 40, 48, 58, 60, 64, 80, 87, 96, 116, 120, 145, 160, 174, 192, 232, 240, 290, 320, 348, 435, 464, 480, 580, 696, 751, 870, 928, 960, 1160, 1392, 1502, 1740, 1856, 2253, 2320, 2784, 3004, 3480, 3755, 4506, 4640, 5568, 6008, 6960, 7510, 9012, 9280, 11265, 12016, 13920, 15020, 18024, 21779, 22530, 24032, 27840, 30040, 36048, 43558, 45060, 48064, 60080, 65337, 72096, 87116, 90120, 108895, 120160, 130674, 144192, 174232, 180240, 217790, 240320, 261348, 326685, 348464, 360480, 435580, 522696, 653370, 696928, 720960, 871160, 1045392, 1306740, 1393856, 1742320, 2090784, 2613480, 3484640, 4181568, 5226960, 6969280, 10453920, 20907840]

約数ペア:

[(1, 20907840), (2, 10453920), (3, 6969280), (4, 5226960), (5, 4181568), (6, 3484640), (8, 2613480), (10, 2090784), (12, 1742320), (15, 1393856), (16, 1306740), (20, 1045392), (24, 871160), (29, 720960), (30, 696928), (32, 653370), (40, 522696), (48, 435580), (58, 360480), (60, 348464), (64, 326685), (80, 261348), (87, 240320), (96, 217790), (116, 180240), (120, 174232), (145, 144192), (160, 130674), (174, 120160), (192, 108895), (232, 90120), (240, 87116), (290, 72096), (320, 65337), (348, 60080), (435, 48064), (464, 45060), (480, 43558), (580, 36048), (696, 30040), (751, 27840), (870, 24032), (928, 22530), (960, 21779), (1160, 18024), (1392, 15020), (1502, 13920), (1740, 12016), (1856, 11265), (2253, 9280), (2320, 9012), (2784, 7510), (3004, 6960), (3480, 6008), (3755, 5568), (4506, 4640)]