21563143

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 3780857

約数列:

[1, 7, 59, 109, 413, 479, 763, 3353, 6431, 28261, 45017, 52211, 197827, 365477, 3080449, 21563143]

約数ペア:

[(1, 21563143), (7, 3080449), (59, 365477), (109, 197827), (413, 52211), (479, 45017), (763, 28261), (3353, 6431)]