21213104

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2803}}^1$

素因数の和:2865

約数の個数: 40

約数和(自身を含む): 45895872

約数和(自身を除く): 24682768

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2803, 3784, 5606, 7568, 11212, 22424, 30833, 44848, 61666, 120529, 123332, 241058, 246664, 482116, 493328, 964232, 1325819, 1928464, 2651638, 5303276, 10606552, 21213104]

約数ペア:

[(1, 21213104), (2, 10606552), (4, 5303276), (8, 2651638), (11, 1928464), (16, 1325819), (22, 964232), (43, 493328), (44, 482116), (86, 246664), (88, 241058), (172, 123332), (176, 120529), (344, 61666), (473, 44848), (688, 30833), (946, 22424), (1892, 11212), (2803, 7568), (3784, 5606)]