20728530

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2113}}^1$

素因数の和:2235

約数の個数: 48

約数和(自身を含む): 54414360

約数和(自身を除く): 33685830

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 109, 218, 327, 545, 654, 981, 1090, 1635, 1962, 2113, 3270, 4226, 4905, 6339, 9810, 10565, 12678, 19017, 21130, 31695, 38034, 63390, 95085, 190170, 230317, 460634, 690951, 1151585, 1381902, 2072853, 2303170, 3454755, 4145706, 6909510, 10364265, 20728530]

約数ペア:

[(1, 20728530), (2, 10364265), (3, 6909510), (5, 4145706), (6, 3454755), (9, 2303170), (10, 2072853), (15, 1381902), (18, 1151585), (30, 690951), (45, 460634), (90, 230317), (109, 190170), (218, 95085), (327, 63390), (545, 38034), (654, 31695), (981, 21130), (1090, 19017), (1635, 12678), (1962, 10565), (2113, 9810), (3270, 6339), (4226, 4905)]