21138344

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3307}}^1$

素因数の和:3377

約数の個数: 32

約数和(自身を含む): 42871680

約数和(自身を除く): 21733336

約数列:

[1, 2, 4, 8, 17, 34, 47, 68, 94, 136, 188, 376, 799, 1598, 3196, 3307, 6392, 6614, 13228, 26456, 56219, 112438, 155429, 224876, 310858, 449752, 621716, 1243432, 2642293, 5284586, 10569172, 21138344]

約数ペア:

[(1, 21138344), (2, 10569172), (4, 5284586), (8, 2642293), (17, 1243432), (34, 621716), (47, 449752), (68, 310858), (94, 224876), (136, 155429), (188, 112438), (376, 56219), (799, 26456), (1598, 13228), (3196, 6614), (3307, 6392)]