20348896

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:395

約数の個数: 48

約数和(自身を含む): 42069888

約数和(自身を除く): 21720992

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 73, 124, 146, 248, 281, 292, 496, 562, 584, 992, 1124, 1168, 2248, 2263, 2336, 4496, 4526, 8711, 8992, 9052, 17422, 18104, 20513, 34844, 36208, 41026, 69688, 72416, 82052, 139376, 164104, 278752, 328208, 635903, 656416, 1271806, 2543612, 5087224, 10174448, 20348896]

約数ペア:

[(1, 20348896), (2, 10174448), (4, 5087224), (8, 2543612), (16, 1271806), (31, 656416), (32, 635903), (62, 328208), (73, 278752), (124, 164104), (146, 139376), (248, 82052), (281, 72416), (292, 69688), (496, 41026), (562, 36208), (584, 34844), (992, 20513), (1124, 18104), (1168, 17422), (2248, 9052), (2263, 8992), (2336, 8711), (4496, 4526)]