640966144

素因数分解:

$2^9\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13757}}^1$

素因数の和:13795

約数の個数: 80

約数和(自身を含む): 1576336608

約数和(自身を除く): 935370464

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, 448, 512, 728, 832, 896, 1456, 1664, 1792, 2912, 3328, 3584, 5824, 6656, 11648, 13757, 23296, 27514, 46592, 55028, 96299, 110056, 178841, 192598, 220112, 357682, 385196, 440224, 715364, 770392, 880448, 1251887, 1430728, 1540784, 1760896, 2503774, 2861456, 3081568, 3521792, 5007548, 5722912, 6163136, 7043584, 10015096, 11445824, 12326272, 20030192, 22891648, 24652544, 40060384, 45783296, 49305088, 80120768, 91566592, 160241536, 320483072, 640966144]

約数ペア:

[(1, 640966144), (2, 320483072), (4, 160241536), (7, 91566592), (8, 80120768), (13, 49305088), (14, 45783296), (16, 40060384), (26, 24652544), (28, 22891648), (32, 20030192), (52, 12326272), (56, 11445824), (64, 10015096), (91, 7043584), (104, 6163136), (112, 5722912), (128, 5007548), (182, 3521792), (208, 3081568), (224, 2861456), (256, 2503774), (364, 1760896), (416, 1540784), (448, 1430728), (512, 1251887), (728, 880448), (832, 770392), (896, 715364), (1456, 440224), (1664, 385196), (1792, 357682), (2912, 220112), (3328, 192598), (3584, 178841), (5824, 110056), (6656, 96299), (11648, 55028), (13757, 46592), (23296, 27514)]