20393464

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 47678400

約数和(自身を除く): 27284936

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 109, 182, 218, 257, 364, 436, 514, 728, 763, 872, 1028, 1417, 1526, 1799, 2056, 2834, 3052, 3341, 3598, 5668, 6104, 6682, 7196, 9919, 11336, 13364, 14392, 19838, 23387, 26728, 28013, 39676, 46774, 56026, 79352, 93548, 112052, 187096, 196091, 224104, 364169, 392182, 728338, 784364, 1456676, 1568728, 2549183, 2913352, 5098366, 10196732, 20393464]

約数ペア:

[(1, 20393464), (2, 10196732), (4, 5098366), (7, 2913352), (8, 2549183), (13, 1568728), (14, 1456676), (26, 784364), (28, 728338), (52, 392182), (56, 364169), (91, 224104), (104, 196091), (109, 187096), (182, 112052), (218, 93548), (257, 79352), (364, 56026), (436, 46774), (514, 39676), (728, 28013), (763, 26728), (872, 23387), (1028, 19838), (1417, 14392), (1526, 13364), (1799, 11336), (2056, 9919), (2834, 7196), (3052, 6682), (3341, 6104), (3598, 5668)]