21639783

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{479}}^1$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 32417280

約数和(自身を除く): 10777497

約数列:

[1, 3, 11, 33, 37, 111, 407, 479, 1221, 1369, 1437, 4107, 5269, 15059, 15807, 17723, 45177, 53169, 194953, 584859, 655751, 1967253, 7213261, 21639783]

約数ペア:

[(1, 21639783), (3, 7213261), (11, 1967253), (33, 655751), (37, 584859), (111, 194953), (407, 53169), (479, 45177), (1221, 17723), (1369, 15807), (1437, 15059), (4107, 5269)]