20827972

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1871}}^1$

素因数の和:1920

約数の個数: 36

約数和(自身を含む): 41827968

約数和(自身を除く): 20999996

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 121, 242, 253, 484, 506, 1012, 1871, 2783, 3742, 5566, 7484, 11132, 20581, 41162, 43033, 82324, 86066, 172132, 226391, 452782, 473363, 905564, 946726, 1893452, 5206993, 10413986, 20827972]

約数ペア:

[(1, 20827972), (2, 10413986), (4, 5206993), (11, 1893452), (22, 946726), (23, 905564), (44, 473363), (46, 452782), (92, 226391), (121, 172132), (242, 86066), (253, 82324), (484, 43033), (506, 41162), (1012, 20581), (1871, 11132), (2783, 7484), (3742, 5566)]