20671156

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42709}}^1$

素因数の和:42735

約数の個数: 18

約数和(自身を含む): 39763010

約数和(自身を除く): 19091854

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42709, 85418, 170836, 469799, 939598, 1879196, 5167789, 10335578, 20671156]

約数ペア:

[(1, 20671156), (2, 10335578), (4, 5167789), (11, 1879196), (22, 939598), (44, 469799), (121, 170836), (242, 85418), (484, 42709)]