638681344

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{11497}}^1$

素因数の和:11551

約数の個数: 72

約数和(自身を含む): 1504122368

約数和(自身を除く): 865441024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 434, 448, 496, 868, 896, 992, 1736, 1792, 1984, 3472, 3968, 6944, 7936, 11497, 13888, 22994, 27776, 45988, 55552, 80479, 91976, 160958, 183952, 321916, 356407, 367904, 643832, 712814, 735808, 1287664, 1425628, 1471616, 2494849, 2575328, 2851256, 2943232, 4989698, 5150656, 5702512, 9979396, 10301312, 11405024, 19958792, 20602624, 22810048, 39917584, 45620096, 79835168, 91240192, 159670336, 319340672, 638681344]

約数ペア:

[(1, 638681344), (2, 319340672), (4, 159670336), (7, 91240192), (8, 79835168), (14, 45620096), (16, 39917584), (28, 22810048), (31, 20602624), (32, 19958792), (56, 11405024), (62, 10301312), (64, 9979396), (112, 5702512), (124, 5150656), (128, 4989698), (217, 2943232), (224, 2851256), (248, 2575328), (256, 2494849), (434, 1471616), (448, 1425628), (496, 1287664), (868, 735808), (896, 712814), (992, 643832), (1736, 367904), (1792, 356407), (1984, 321916), (3472, 183952), (3968, 160958), (6944, 91976), (7936, 80479), (11497, 55552), (13888, 45988), (22994, 27776)]