20665140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2113}}^1$

素因数の和:2288

約数の個数: 48

約数和(自身を含む): 58244928

約数和(自身を除く): 37579788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 163, 326, 489, 652, 815, 978, 1630, 1956, 2113, 2445, 3260, 4226, 4890, 6339, 8452, 9780, 10565, 12678, 21130, 25356, 31695, 42260, 63390, 126780, 344419, 688838, 1033257, 1377676, 1722095, 2066514, 3444190, 4133028, 5166285, 6888380, 10332570, 20665140]

約数ペア:

[(1, 20665140), (2, 10332570), (3, 6888380), (4, 5166285), (5, 4133028), (6, 3444190), (10, 2066514), (12, 1722095), (15, 1377676), (20, 1033257), (30, 688838), (60, 344419), (163, 126780), (326, 63390), (489, 42260), (652, 31695), (815, 25356), (978, 21130), (1630, 12678), (1956, 10565), (2113, 9780), (2445, 8452), (3260, 6339), (4226, 4890)]