25487721

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 44928000

約数和(自身を除く): 19440279

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 107, 133, 171, 199, 321, 399, 597, 749, 963, 1197, 1393, 1791, 2033, 2247, 3781, 4179, 6099, 6741, 11343, 12537, 14231, 18297, 21293, 26467, 34029, 42693, 63879, 79401, 128079, 149051, 191637, 238203, 404567, 447153, 1213701, 1341459, 2831969, 3641103, 8495907, 25487721]

約数ペア:

[(1, 25487721), (3, 8495907), (7, 3641103), (9, 2831969), (19, 1341459), (21, 1213701), (57, 447153), (63, 404567), (107, 238203), (133, 191637), (171, 149051), (199, 128079), (321, 79401), (399, 63879), (597, 42693), (749, 34029), (963, 26467), (1197, 21293), (1393, 18297), (1791, 14231), (2033, 12537), (2247, 11343), (3781, 6741), (4179, 6099)]