20988902

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{2017}}^1$

素因数の和:2084

約数の個数: 24

約数和(自身を含む): 35428008

約数和(自身を除く): 14439106

約数列:

[1, 2, 11, 22, 43, 86, 121, 242, 473, 946, 2017, 4034, 5203, 10406, 22187, 44374, 86731, 173462, 244057, 488114, 954041, 1908082, 10494451, 20988902]

約数ペア:

[(1, 20988902), (2, 10494451), (11, 1908082), (22, 954041), (43, 488114), (86, 244057), (121, 173462), (242, 86731), (473, 44374), (946, 22187), (2017, 10406), (4034, 5203)]