21085708

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20353}}^1$

素因数の和:20401

約数の個数: 24

約数和(自身を含む): 43313312

約数和(自身を除く): 22227604

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20353, 40706, 81412, 142471, 284942, 569884, 753061, 1506122, 3012244, 5271427, 10542854, 21085708]

約数ペア:

[(1, 21085708), (2, 10542854), (4, 5271427), (7, 3012244), (14, 1506122), (28, 753061), (37, 569884), (74, 284942), (148, 142471), (259, 81412), (518, 40706), (1036, 20353)]