21653406

素因数分解:

$2^1\times 3^4\times {\mathrm{73}}^1\times {\mathrm{1831}}^1$

素因数の和:1918

約数の個数: 40

約数和(自身を含む): 49211184

約数和(自身を除く): 27557778

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 73, 81, 146, 162, 219, 438, 657, 1314, 1831, 1971, 3662, 3942, 5493, 5913, 10986, 11826, 16479, 32958, 49437, 98874, 133663, 148311, 267326, 296622, 400989, 801978, 1202967, 2405934, 3608901, 7217802, 10826703, 21653406]

約数ペア:

[(1, 21653406), (2, 10826703), (3, 7217802), (6, 3608901), (9, 2405934), (18, 1202967), (27, 801978), (54, 400989), (73, 296622), (81, 267326), (146, 148311), (162, 133663), (219, 98874), (438, 49437), (657, 32958), (1314, 16479), (1831, 11826), (1971, 10986), (3662, 5913), (3942, 5493)]