20916511

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 30101760

約数和(自身を除く): 9185249

約数列:

[1, 7, 11, 17, 19, 29, 77, 119, 133, 187, 203, 209, 319, 323, 493, 551, 841, 1309, 1463, 2233, 2261, 3451, 3553, 3857, 5423, 5887, 6061, 9251, 9367, 14297, 15979, 24871, 37961, 42427, 64757, 65569, 100079, 103037, 111853, 157267, 175769, 271643, 721259, 1100869, 1230383, 1901501, 2988073, 20916511]

約数ペア:

[(1, 20916511), (7, 2988073), (11, 1901501), (17, 1230383), (19, 1100869), (29, 721259), (77, 271643), (119, 175769), (133, 157267), (187, 111853), (203, 103037), (209, 100079), (319, 65569), (323, 64757), (493, 42427), (551, 37961), (841, 24871), (1309, 15979), (1463, 14297), (2233, 9367), (2261, 9251), (3451, 6061), (3553, 5887), (3857, 5423)]