21175218

素因数分解:

$2^1\times 3^2\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 47324160

約数和(自身を除く): 26148942

約数列:

[1, 2, 3, 6, 9, 18, 59, 118, 127, 157, 177, 254, 314, 354, 381, 471, 531, 762, 942, 1062, 1143, 1413, 2286, 2826, 7493, 9263, 14986, 18526, 19939, 22479, 27789, 39878, 44958, 55578, 59817, 67437, 83367, 119634, 134874, 166734, 179451, 358902, 1176401, 2352802, 3529203, 7058406, 10587609, 21175218]

約数ペア:

[(1, 21175218), (2, 10587609), (3, 7058406), (6, 3529203), (9, 2352802), (18, 1176401), (59, 358902), (118, 179451), (127, 166734), (157, 134874), (177, 119634), (254, 83367), (314, 67437), (354, 59817), (381, 55578), (471, 44958), (531, 39878), (762, 27789), (942, 22479), (1062, 19939), (1143, 18526), (1413, 14986), (2286, 9263), (2826, 7493)]