21740367

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 11105457

約数列:

[1, 3, 11, 33, 47, 107, 131, 141, 321, 393, 517, 1177, 1441, 1551, 3531, 4323, 5029, 6157, 14017, 15087, 18471, 42051, 55319, 67727, 154187, 165957, 203181, 462561, 658799, 1976397, 7246789, 21740367]

約数ペア:

[(1, 21740367), (3, 7246789), (11, 1976397), (33, 658799), (47, 462561), (107, 203181), (131, 165957), (141, 154187), (321, 67727), (393, 55319), (517, 42051), (1177, 18471), (1441, 15087), (1551, 14017), (3531, 6157), (4323, 5029)]