256497395

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{4793}}^1$

素因数の和:4955

約数の個数: 32

約数和(自身を含む): 386588160

約数和(自身を除く): 130090765

約数列:

[1, 5, 7, 11, 35, 55, 77, 139, 385, 695, 973, 1529, 4793, 4865, 7645, 10703, 23965, 33551, 52723, 53515, 167755, 263615, 369061, 666227, 1845305, 3331135, 4663589, 7328497, 23317945, 36642485, 51299479, 256497395]

約数ペア:

[(1, 256497395), (5, 51299479), (7, 36642485), (11, 23317945), (35, 7328497), (55, 4663589), (77, 3331135), (139, 1845305), (385, 666227), (695, 369061), (973, 263615), (1529, 167755), (4793, 53515), (4865, 52723), (7645, 33551), (10703, 23965)]