21081268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{10957}}^1$

素因数の和:11011

約数の個数: 24

約数和(自身を含む): 40807592

約数和(自身を除く): 19726324

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 148, 481, 962, 1924, 10957, 21914, 43828, 142441, 284882, 405409, 569764, 810818, 1621636, 5270317, 10540634, 21081268]

約数ペア:

[(1, 21081268), (2, 10540634), (4, 5270317), (13, 1621636), (26, 810818), (37, 569764), (52, 405409), (74, 284882), (148, 142441), (481, 43828), (962, 21914), (1924, 10957)]