278490640

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^2\times {\mathrm{293}}^1$

素因数の和:524

約数の個数: 60

約数和(自身を含む): 655715844

約数和(自身を除く): 377225204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 293, 436, 545, 586, 872, 1090, 1172, 1465, 1744, 2180, 2344, 2930, 4360, 4688, 5860, 8720, 11720, 11881, 23440, 23762, 31937, 47524, 59405, 63874, 95048, 118810, 127748, 159685, 190096, 237620, 255496, 319370, 475240, 510992, 638740, 950480, 1277480, 2554960, 3481133, 6962266, 13924532, 17405665, 27849064, 34811330, 55698128, 69622660, 139245320, 278490640]

約数ペア:

[(1, 278490640), (2, 139245320), (4, 69622660), (5, 55698128), (8, 34811330), (10, 27849064), (16, 17405665), (20, 13924532), (40, 6962266), (80, 3481133), (109, 2554960), (218, 1277480), (293, 950480), (436, 638740), (545, 510992), (586, 475240), (872, 319370), (1090, 255496), (1172, 237620), (1465, 190096), (1744, 159685), (2180, 127748), (2344, 118810), (2930, 95048), (4360, 63874), (4688, 59405), (5860, 47524), (8720, 31937), (11720, 23762), (11881, 23440)]