21938103

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 15127497

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 107, 109, 171, 209, 321, 327, 627, 963, 981, 1177, 1199, 1881, 2033, 2071, 3531, 3597, 6099, 6213, 10593, 10791, 11663, 18297, 18639, 22363, 22781, 34989, 67089, 68343, 104967, 128293, 201267, 205029, 221597, 384879, 664791, 1154637, 1994373, 2437567, 7312701, 21938103]

約数ペア:

[(1, 21938103), (3, 7312701), (9, 2437567), (11, 1994373), (19, 1154637), (33, 664791), (57, 384879), (99, 221597), (107, 205029), (109, 201267), (171, 128293), (209, 104967), (321, 68343), (327, 67089), (627, 34989), (963, 22781), (981, 22363), (1177, 18639), (1199, 18297), (1881, 11663), (2033, 10791), (2071, 10593), (3531, 6213), (3597, 6099)]