21804718

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2081}}^1$

素因数の和:2140

約数の個数: 24

約数和(自身を含む): 36576576

約数和(自身を除く): 14771858

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 2081, 4162, 5239, 10478, 27053, 54106, 64511, 129022, 351689, 703378, 838643, 1677286, 10902359, 21804718]

約数ペア:

[(1, 21804718), (2, 10902359), (13, 1677286), (26, 838643), (31, 703378), (62, 351689), (169, 129022), (338, 64511), (403, 54106), (806, 27053), (2081, 10478), (4162, 5239)]