139297480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{497491}}^1$

素因数の和:497509

約数の個数: 32

約数和(自身を含む): 358194240

約数和(自身を除く): 218896760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 497491, 994982, 1989964, 2487455, 3482437, 3979928, 4974910, 6964874, 9949820, 13929748, 17412185, 19899640, 27859496, 34824370, 69648740, 139297480]

約数ペア:

[(1, 139297480), (2, 69648740), (4, 34824370), (5, 27859496), (7, 19899640), (8, 17412185), (10, 13929748), (14, 9949820), (20, 6964874), (28, 4974910), (35, 3979928), (40, 3482437), (56, 2487455), (70, 1989964), (140, 994982), (280, 497491)]