20862540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115903}}^1$

素因数の和:115918

約数の個数: 36

約数和(自身を含む): 63283584

約数和(自身を除く): 42421044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115903, 231806, 347709, 463612, 579515, 695418, 1043127, 1159030, 1390836, 1738545, 2086254, 2318060, 3477090, 4172508, 5215635, 6954180, 10431270, 20862540]

約数ペア:

[(1, 20862540), (2, 10431270), (3, 6954180), (4, 5215635), (5, 4172508), (6, 3477090), (9, 2318060), (10, 2086254), (12, 1738545), (15, 1390836), (18, 1159030), (20, 1043127), (30, 695418), (36, 579515), (45, 463612), (60, 347709), (90, 231806), (180, 115903)]