19788256

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 40615344

約数和(自身を除く): 20827088

約数列:

[1, 2, 4, 8, 16, 32, 43, 73, 86, 146, 172, 197, 292, 344, 394, 584, 688, 788, 1168, 1376, 1576, 2336, 3139, 3152, 6278, 6304, 8471, 12556, 14381, 16942, 25112, 28762, 33884, 50224, 57524, 67768, 100448, 115048, 135536, 230096, 271072, 460192, 618383, 1236766, 2473532, 4947064, 9894128, 19788256]

約数ペア:

[(1, 19788256), (2, 9894128), (4, 4947064), (8, 2473532), (16, 1236766), (32, 618383), (43, 460192), (73, 271072), (86, 230096), (146, 135536), (172, 115048), (197, 100448), (292, 67768), (344, 57524), (394, 50224), (584, 33884), (688, 28762), (788, 25112), (1168, 16942), (1376, 14381), (1576, 12556), (2336, 8471), (3139, 6304), (3152, 6278)]