21285648

素因数分解:

$2^4\times 3^2\times {\mathrm{53}}^1\times {\mathrm{2789}}^1$

素因数の和:2856

約数の個数: 60

約数和(自身を含む): 60715980

約数和(自身を除く): 39430332

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 53, 72, 106, 144, 159, 212, 318, 424, 477, 636, 848, 954, 1272, 1908, 2544, 2789, 3816, 5578, 7632, 8367, 11156, 16734, 22312, 25101, 33468, 44624, 50202, 66936, 100404, 133872, 147817, 200808, 295634, 401616, 443451, 591268, 886902, 1182536, 1330353, 1773804, 2365072, 2660706, 3547608, 5321412, 7095216, 10642824, 21285648]

約数ペア:

[(1, 21285648), (2, 10642824), (3, 7095216), (4, 5321412), (6, 3547608), (8, 2660706), (9, 2365072), (12, 1773804), (16, 1330353), (18, 1182536), (24, 886902), (36, 591268), (48, 443451), (53, 401616), (72, 295634), (106, 200808), (144, 147817), (159, 133872), (212, 100404), (318, 66936), (424, 50202), (477, 44624), (636, 33468), (848, 25101), (954, 22312), (1272, 16734), (1908, 11156), (2544, 8367), (2789, 7632), (3816, 5578)]