21603540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51437}}^1$

素因数の和:51456

約数の個数: 48

約数和(自身を含む): 69132672

約数和(自身を除く): 47529132

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51437, 102874, 154311, 205748, 257185, 308622, 360059, 514370, 617244, 720118, 771555, 1028740, 1080177, 1440236, 1543110, 1800295, 2160354, 3086220, 3600590, 4320708, 5400885, 7201180, 10801770, 21603540]

約数ペア:

[(1, 21603540), (2, 10801770), (3, 7201180), (4, 5400885), (5, 4320708), (6, 3600590), (7, 3086220), (10, 2160354), (12, 1800295), (14, 1543110), (15, 1440236), (20, 1080177), (21, 1028740), (28, 771555), (30, 720118), (35, 617244), (42, 514370), (60, 360059), (70, 308622), (84, 257185), (105, 205748), (140, 154311), (210, 102874), (420, 51437)]