21153784

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49891}}^1$

素因数の和:49950

約数の個数: 16

約数和(自身を含む): 40412520

約数和(自身を除く): 19258736

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49891, 99782, 199564, 399128, 2644223, 5288446, 10576892, 21153784]

約数ペア:

[(1, 21153784), (2, 10576892), (4, 5288446), (8, 2644223), (53, 399128), (106, 199564), (212, 99782), (424, 49891)]