21254185

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1\times {\mathrm{439}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 26737920

約数和(自身を除く): 5483735

約数列:

[1, 5, 23, 115, 421, 439, 2105, 2195, 9683, 10097, 48415, 50485, 184819, 924095, 4250837, 21254185]

約数ペア:

[(1, 21254185), (5, 4250837), (23, 924095), (115, 184819), (421, 50485), (439, 48415), (2105, 10097), (2195, 9683)]