20580660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2659}}^1$

素因数の和:2717

約数の個数: 72

約数和(自身を含む): 63903840

約数和(自身を除く): 43323180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2659, 3870, 5318, 7740, 7977, 10636, 13295, 15954, 23931, 26590, 31908, 39885, 47862, 53180, 79770, 95724, 114337, 119655, 159540, 228674, 239310, 343011, 457348, 478620, 571685, 686022, 1029033, 1143370, 1372044, 1715055, 2058066, 2286740, 3430110, 4116132, 5145165, 6860220, 10290330, 20580660]

約数ペア:

[(1, 20580660), (2, 10290330), (3, 6860220), (4, 5145165), (5, 4116132), (6, 3430110), (9, 2286740), (10, 2058066), (12, 1715055), (15, 1372044), (18, 1143370), (20, 1029033), (30, 686022), (36, 571685), (43, 478620), (45, 457348), (60, 343011), (86, 239310), (90, 228674), (129, 159540), (172, 119655), (180, 114337), (215, 95724), (258, 79770), (387, 53180), (430, 47862), (516, 39885), (645, 31908), (774, 26590), (860, 23931), (1290, 15954), (1548, 13295), (1935, 10636), (2580, 7977), (2659, 7740), (3870, 5318)]