21891879

素因数分解:

$3^2\times {\mathrm{107}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:419

約数の個数: 24

約数和(自身を含む): 32348160

約数和(自身を除く): 10456281

約数列:

[1, 3, 9, 107, 127, 179, 321, 381, 537, 963, 1143, 1611, 13589, 19153, 22733, 40767, 57459, 68199, 122301, 172377, 204597, 2432431, 7297293, 21891879]

約数ペア:

[(1, 21891879), (3, 7297293), (9, 2432431), (107, 204597), (127, 172377), (179, 122301), (321, 68199), (381, 57459), (537, 40767), (963, 22733), (1143, 19153), (1611, 13589)]