21193328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101891}}^1$

素因数の和:101912

約数の個数: 20

約数和(自身を含む): 44221128

約数和(自身を除く): 23027800

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101891, 203782, 407564, 815128, 1324583, 1630256, 2649166, 5298332, 10596664, 21193328]

約数ペア:

[(1, 21193328), (2, 10596664), (4, 5298332), (8, 2649166), (13, 1630256), (16, 1324583), (26, 815128), (52, 407564), (104, 203782), (208, 101891)]