19784204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{2131}}^1$

素因数の和:2357

約数の個数: 24

約数和(自身を含む): 37966656

約数和(自身を除く): 18182452

約数列:

[1, 2, 4, 11, 22, 44, 211, 422, 844, 2131, 2321, 4262, 4642, 8524, 9284, 23441, 46882, 93764, 449641, 899282, 1798564, 4946051, 9892102, 19784204]

約数ペア:

[(1, 19784204), (2, 9892102), (4, 4946051), (11, 1798564), (22, 899282), (44, 449641), (211, 93764), (422, 46882), (844, 23441), (2131, 9284), (2321, 8524), (4262, 4642)]