20081320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71719}}^1$

素因数の和:71737

約数の個数: 32

約数和(自身を含む): 51638400

約数和(自身を除く): 31557080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71719, 143438, 286876, 358595, 502033, 573752, 717190, 1004066, 1434380, 2008132, 2510165, 2868760, 4016264, 5020330, 10040660, 20081320]

約数ペア:

[(1, 20081320), (2, 10040660), (4, 5020330), (5, 4016264), (7, 2868760), (8, 2510165), (10, 2008132), (14, 1434380), (20, 1004066), (28, 717190), (35, 573752), (40, 502033), (56, 358595), (70, 286876), (140, 143438), (280, 71719)]