20453888

素因数分解:

$2^9\times 7^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1$

素因数の和:477

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 29959552

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 256, 364, 416, 439, 448, 512, 728, 832, 878, 896, 1456, 1664, 1756, 1792, 2912, 3073, 3328, 3512, 3584, 5707, 5824, 6146, 6656, 7024, 11414, 11648, 12292, 14048, 22828, 23296, 24584, 28096, 39949, 45656, 46592, 49168, 56192, 79898, 91312, 98336, 112384, 159796, 182624, 196672, 224768, 319592, 365248, 393344, 639184, 730496, 786688, 1278368, 1460992, 1573376, 2556736, 2921984, 5113472, 10226944, 20453888]

約数ペア:

[(1, 20453888), (2, 10226944), (4, 5113472), (7, 2921984), (8, 2556736), (13, 1573376), (14, 1460992), (16, 1278368), (26, 786688), (28, 730496), (32, 639184), (52, 393344), (56, 365248), (64, 319592), (91, 224768), (104, 196672), (112, 182624), (128, 159796), (182, 112384), (208, 98336), (224, 91312), (256, 79898), (364, 56192), (416, 49168), (439, 46592), (448, 45656), (512, 39949), (728, 28096), (832, 24584), (878, 23296), (896, 22828), (1456, 14048), (1664, 12292), (1756, 11648), (1792, 11414), (2912, 7024), (3073, 6656), (3328, 6146), (3512, 5824), (3584, 5707)]