21836828

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{32303}}^1$

素因数の和:32333

約数の個数: 18

約数和(自身を含む): 41381424

約数和(自身を除く): 19544596

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 32303, 64606, 129212, 419939, 839878, 1679756, 5459207, 10918414, 21836828]

約数ペア:

[(1, 21836828), (2, 10918414), (4, 5459207), (13, 1679756), (26, 839878), (52, 419939), (169, 129212), (338, 64606), (676, 32303)]