20620620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1051}}^1$

素因数の和:1175

約数の個数: 72

約数和(自身を含む): 63183120

約数和(自身を除く): 42562500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1051, 1090, 1308, 1635, 1962, 2102, 2180, 3153, 3270, 3924, 4204, 4905, 5255, 6306, 6540, 9459, 9810, 10510, 12612, 15765, 18918, 19620, 21020, 31530, 37836, 47295, 63060, 94590, 114559, 189180, 229118, 343677, 458236, 572795, 687354, 1031031, 1145590, 1374708, 1718385, 2062062, 2291180, 3436770, 4124124, 5155155, 6873540, 10310310, 20620620]

約数ペア:

[(1, 20620620), (2, 10310310), (3, 6873540), (4, 5155155), (5, 4124124), (6, 3436770), (9, 2291180), (10, 2062062), (12, 1718385), (15, 1374708), (18, 1145590), (20, 1031031), (30, 687354), (36, 572795), (45, 458236), (60, 343677), (90, 229118), (109, 189180), (180, 114559), (218, 94590), (327, 63060), (436, 47295), (545, 37836), (654, 31530), (981, 21020), (1051, 19620), (1090, 18918), (1308, 15765), (1635, 12612), (1962, 10510), (2102, 9810), (2180, 9459), (3153, 6540), (3270, 6306), (3924, 5255), (4204, 4905)]