54931640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{293}}^1$

素因数の和:456

約数の個数: 64

約数和(自身を含む): 128066400

約数和(自身を除く): 73134760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 109, 172, 215, 218, 293, 344, 430, 436, 545, 586, 860, 872, 1090, 1172, 1465, 1720, 2180, 2344, 2930, 4360, 4687, 5860, 9374, 11720, 12599, 18748, 23435, 25198, 31937, 37496, 46870, 50396, 62995, 63874, 93740, 100792, 125990, 127748, 159685, 187480, 251980, 255496, 319370, 503960, 638740, 1277480, 1373291, 2746582, 5493164, 6866455, 10986328, 13732910, 27465820, 54931640]

約数ペア:

[(1, 54931640), (2, 27465820), (4, 13732910), (5, 10986328), (8, 6866455), (10, 5493164), (20, 2746582), (40, 1373291), (43, 1277480), (86, 638740), (109, 503960), (172, 319370), (215, 255496), (218, 251980), (293, 187480), (344, 159685), (430, 127748), (436, 125990), (545, 100792), (586, 93740), (860, 63874), (872, 62995), (1090, 50396), (1172, 46870), (1465, 37496), (1720, 31937), (2180, 25198), (2344, 23435), (2930, 18748), (4360, 12599), (4687, 11720), (5860, 9374)]