21026740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5179}}^1$

素因数の和:5224

約数の個数: 48

約数和(自身を含む): 52214400

約数和(自身を除く): 31187660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5179, 10358, 20716, 25895, 36253, 51790, 72506, 103580, 145012, 150191, 181265, 300382, 362530, 600764, 725060, 750955, 1051337, 1501910, 2102674, 3003820, 4205348, 5256685, 10513370, 21026740]

約数ペア:

[(1, 21026740), (2, 10513370), (4, 5256685), (5, 4205348), (7, 3003820), (10, 2102674), (14, 1501910), (20, 1051337), (28, 750955), (29, 725060), (35, 600764), (58, 362530), (70, 300382), (116, 181265), (140, 150191), (145, 145012), (203, 103580), (290, 72506), (406, 51790), (580, 36253), (812, 25895), (1015, 20716), (2030, 10358), (4060, 5179)]