18996740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4679}}^1$

素因数の和:4724

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 28177660

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, 4679, 9358, 18716, 23395, 32753, 46790, 65506, 93580, 131012, 135691, 163765, 271382, 327530, 542764, 655060, 678455, 949837, 1356910, 1899674, 2713820, 3799348, 4749185, 9498370, 18996740]

約数ペア:

[(1, 18996740), (2, 9498370), (4, 4749185), (5, 3799348), (7, 2713820), (10, 1899674), (14, 1356910), (20, 949837), (28, 678455), (29, 655060), (35, 542764), (58, 327530), (70, 271382), (116, 163765), (140, 135691), (145, 131012), (203, 93580), (290, 65506), (406, 46790), (580, 32753), (812, 23395), (1015, 18716), (2030, 9358), (4060, 4679)]