21985728

素因数分解:

$2^6\times 3^1\times {\mathrm{43}}^1\times {\mathrm{2663}}^1$

素因数の和:2721

約数の個数: 56

約数和(自身を含む): 59545728

約数和(自身を除く): 37560000

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 43, 48, 64, 86, 96, 129, 172, 192, 258, 344, 516, 688, 1032, 1376, 2064, 2663, 2752, 4128, 5326, 7989, 8256, 10652, 15978, 21304, 31956, 42608, 63912, 85216, 114509, 127824, 170432, 229018, 255648, 343527, 458036, 511296, 687054, 916072, 1374108, 1832144, 2748216, 3664288, 5496432, 7328576, 10992864, 21985728]

約数ペア:

[(1, 21985728), (2, 10992864), (3, 7328576), (4, 5496432), (6, 3664288), (8, 2748216), (12, 1832144), (16, 1374108), (24, 916072), (32, 687054), (43, 511296), (48, 458036), (64, 343527), (86, 255648), (96, 229018), (129, 170432), (172, 127824), (192, 114509), (258, 85216), (344, 63912), (516, 42608), (688, 31956), (1032, 21304), (1376, 15978), (2064, 10652), (2663, 8256), (2752, 7989), (4128, 5326)]