68400080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17449}}^1$

素因数の和:17476

約数の個数: 60

約数和(自身を含む): 185004900

約数和(自身を除く): 116604820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 17449, 34898, 69796, 87245, 122143, 139592, 174490, 244286, 279184, 348980, 488572, 610715, 697960, 855001, 977144, 1221430, 1395920, 1710002, 1954288, 2442860, 3420004, 4275005, 4885720, 6840008, 8550010, 9771440, 13680016, 17100020, 34200040, 68400080]

約数ペア:

[(1, 68400080), (2, 34200040), (4, 17100020), (5, 13680016), (7, 9771440), (8, 8550010), (10, 6840008), (14, 4885720), (16, 4275005), (20, 3420004), (28, 2442860), (35, 1954288), (40, 1710002), (49, 1395920), (56, 1221430), (70, 977144), (80, 855001), (98, 697960), (112, 610715), (140, 488572), (196, 348980), (245, 279184), (280, 244286), (392, 174490), (490, 139592), (560, 122143), (784, 87245), (980, 69796), (1960, 34898), (3920, 17449)]