638431456

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{32653}}^1$

素因数の和:32723

約数の個数: 48

約数和(自身を含む): 1382439744

約数和(自身を除く): 744008288

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 94, 104, 188, 208, 376, 416, 611, 752, 1222, 1504, 2444, 4888, 9776, 19552, 32653, 65306, 130612, 261224, 424489, 522448, 848978, 1044896, 1534691, 1697956, 3069382, 3395912, 6138764, 6791824, 12277528, 13583648, 19950983, 24555056, 39901966, 49110112, 79803932, 159607864, 319215728, 638431456]

約数ペア:

[(1, 638431456), (2, 319215728), (4, 159607864), (8, 79803932), (13, 49110112), (16, 39901966), (26, 24555056), (32, 19950983), (47, 13583648), (52, 12277528), (94, 6791824), (104, 6138764), (188, 3395912), (208, 3069382), (376, 1697956), (416, 1534691), (611, 1044896), (752, 848978), (1222, 522448), (1504, 424489), (2444, 261224), (4888, 130612), (9776, 65306), (19552, 32653)]