21878507

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4969}}^1$

素因数の和:5030

約数の個数: 16

約数和(自身を含む): 27195840

約数和(自身を除く): 5317333

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4969, 34783, 84473, 183853, 591311, 1286971, 3125501, 21878507]

約数ペア:

[(1, 21878507), (7, 3125501), (17, 1286971), (37, 591311), (119, 183853), (259, 84473), (629, 34783), (4403, 4969)]