21640539

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6673}}^1$

素因数の和:6746

約数の個数: 16

約数和(自身を含む): 30753792

約数和(自身を除く): 9113253

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 6673, 20019, 153479, 313631, 460437, 940893, 7213513, 21640539]

約数ペア:

[(1, 21640539), (3, 7213513), (23, 940893), (47, 460437), (69, 313631), (141, 153479), (1081, 20019), (3243, 6673)]