20556908

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{769}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 37126320

約数和(自身を除く): 16569412

約数列:

[1, 2, 4, 41, 82, 163, 164, 326, 652, 769, 1538, 3076, 6683, 13366, 26732, 31529, 63058, 125347, 126116, 250694, 501388, 5139227, 10278454, 20556908]

約数ペア:

[(1, 20556908), (2, 10278454), (4, 5139227), (41, 501388), (82, 250694), (163, 126116), (164, 125347), (326, 63058), (652, 31529), (769, 26732), (1538, 13366), (3076, 6683)]