21236605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2081}}^1$

素因数の和:2256

約数の個数: 16

約数和(自身を含む): 27632304

約数和(自身を除く): 6395699

約数列:

[1, 5, 13, 65, 157, 785, 2041, 2081, 10205, 10405, 27053, 135265, 326717, 1633585, 4247321, 21236605]

約数ペア:

[(1, 21236605), (5, 4247321), (13, 1633585), (65, 326717), (157, 135265), (785, 27053), (2041, 10405), (2081, 10205)]