21117033

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4721}}^1$

素因数の和:4805

約数の個数: 24

約数和(自身を含む): 35358336

約数和(自身を除く): 14241303

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4721, 14163, 33047, 42489, 99141, 297423, 335191, 1005573, 2346337, 3016719, 7039011, 21117033]

約数ペア:

[(1, 21117033), (3, 7039011), (7, 3016719), (9, 2346337), (21, 1005573), (63, 335191), (71, 297423), (213, 99141), (497, 42489), (639, 33047), (1491, 14163), (4473, 4721)]