21203730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5479}}^1$

素因数の和:5535

約数の個数: 48

約数和(自身を含む): 56422080

約数和(自身を除く): 35218350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5479, 10958, 16437, 27395, 32874, 49311, 54790, 82185, 98622, 164370, 235597, 246555, 471194, 493110, 706791, 1177985, 1413582, 2120373, 2355970, 3533955, 4240746, 7067910, 10601865, 21203730]

約数ペア:

[(1, 21203730), (2, 10601865), (3, 7067910), (5, 4240746), (6, 3533955), (9, 2355970), (10, 2120373), (15, 1413582), (18, 1177985), (30, 706791), (43, 493110), (45, 471194), (86, 246555), (90, 235597), (129, 164370), (215, 98622), (258, 82185), (387, 54790), (430, 49311), (645, 32874), (774, 27395), (1290, 16437), (1935, 10958), (3870, 5479)]