20865888

素因数分解:

$2^5\times 3^2\times {\mathrm{53}}^1\times {\mathrm{1367}}^1$

素因数の和:1436

約数の個数: 72

約数和(自身を含む): 60501168

約数和(自身を除く): 39635280

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 53, 72, 96, 106, 144, 159, 212, 288, 318, 424, 477, 636, 848, 954, 1272, 1367, 1696, 1908, 2544, 2734, 3816, 4101, 5088, 5468, 7632, 8202, 10936, 12303, 15264, 16404, 21872, 24606, 32808, 43744, 49212, 65616, 72451, 98424, 131232, 144902, 196848, 217353, 289804, 393696, 434706, 579608, 652059, 869412, 1159216, 1304118, 1738824, 2318432, 2608236, 3477648, 5216472, 6955296, 10432944, 20865888]

約数ペア:

[(1, 20865888), (2, 10432944), (3, 6955296), (4, 5216472), (6, 3477648), (8, 2608236), (9, 2318432), (12, 1738824), (16, 1304118), (18, 1159216), (24, 869412), (32, 652059), (36, 579608), (48, 434706), (53, 393696), (72, 289804), (96, 217353), (106, 196848), (144, 144902), (159, 131232), (212, 98424), (288, 72451), (318, 65616), (424, 49212), (477, 43744), (636, 32808), (848, 24606), (954, 21872), (1272, 16404), (1367, 15264), (1696, 12303), (1908, 10936), (2544, 8202), (2734, 7632), (3816, 5468), (4101, 5088)]