20404953

素因数分解:

$3^5\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 30846816

約数和(自身を除く): 10441863

約数列:

[1, 3, 9, 27, 81, 131, 243, 393, 641, 1179, 1923, 3537, 5769, 10611, 17307, 31833, 51921, 83971, 155763, 251913, 755739, 2267217, 6801651, 20404953]

約数ペア:

[(1, 20404953), (3, 6801651), (9, 2267217), (27, 755739), (81, 251913), (131, 155763), (243, 83971), (393, 51921), (641, 31833), (1179, 17307), (1923, 10611), (3537, 5769)]