21738087

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20297}}^1$

素因数の和:20327

約数の個数: 24

約数和(自身を含む): 37997856

約数和(自身を除く): 16259769

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20297, 60891, 142079, 182673, 345049, 426237, 1035147, 1278711, 2415343, 3105441, 7246029, 21738087]

約数ペア:

[(1, 21738087), (3, 7246029), (7, 3105441), (9, 2415343), (17, 1278711), (21, 1035147), (51, 426237), (63, 345049), (119, 182673), (153, 142079), (357, 60891), (1071, 20297)]