20801979

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11059}}^1$

素因数の和:11095

約数の個数: 24

約数和(自身を含む): 34507200

約数和(自身を除く): 13705221

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11059, 33177, 99531, 121649, 210121, 364947, 630363, 1094841, 1891089, 2311331, 6933993, 20801979]

約数ペア:

[(1, 20801979), (3, 6933993), (9, 2311331), (11, 1891089), (19, 1094841), (33, 630363), (57, 364947), (99, 210121), (171, 121649), (209, 99531), (627, 33177), (1881, 11059)]