20347299

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:129

約数の個数: 72

約数和(自身を含む): 37168560

約数和(自身を除く): 16821261

約数列:

[1, 3, 7, 9, 21, 29, 37, 43, 49, 63, 87, 111, 129, 147, 203, 259, 261, 301, 333, 387, 441, 609, 777, 903, 1073, 1247, 1421, 1591, 1813, 1827, 2107, 2331, 2709, 3219, 3741, 4263, 4773, 5439, 6321, 7511, 8729, 9657, 11137, 11223, 12789, 14319, 16317, 18963, 22533, 26187, 33411, 46139, 52577, 61103, 67599, 77959, 78561, 100233, 138417, 157731, 183309, 233877, 322973, 415251, 473193, 549927, 701631, 968919, 2260811, 2906757, 6782433, 20347299]

約数ペア:

[(1, 20347299), (3, 6782433), (7, 2906757), (9, 2260811), (21, 968919), (29, 701631), (37, 549927), (43, 473193), (49, 415251), (63, 322973), (87, 233877), (111, 183309), (129, 157731), (147, 138417), (203, 100233), (259, 78561), (261, 77959), (301, 67599), (333, 61103), (387, 52577), (441, 46139), (609, 33411), (777, 26187), (903, 22533), (1073, 18963), (1247, 16317), (1421, 14319), (1591, 12789), (1813, 11223), (1827, 11137), (2107, 9657), (2331, 8729), (2709, 7511), (3219, 6321), (3741, 5439), (4263, 4773)]