21000565688

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6546311}}^1$

素因数の和:6546718

約数の個数: 16

約数和(自身を含む): 39474261360

約数和(自身を除く): 18473695672

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6546311, 13092622, 26185244, 52370488, 2625070711, 5250141422, 10500282844, 21000565688]

約数ペア:

[(1, 21000565688), (2, 10500282844), (4, 5250141422), (8, 2625070711), (401, 52370488), (802, 26185244), (1604, 13092622), (3208, 6546311)]