21557272

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1231}}^1$

素因数の和:1447

約数の個数: 32

約数和(自身を含む): 44352000

約数和(自身を除く): 22794728

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 199, 398, 796, 1231, 1592, 2189, 2462, 4378, 4924, 8756, 9848, 13541, 17512, 27082, 54164, 108328, 244969, 489938, 979876, 1959752, 2694659, 5389318, 10778636, 21557272]

約数ペア:

[(1, 21557272), (2, 10778636), (4, 5389318), (8, 2694659), (11, 1959752), (22, 979876), (44, 489938), (88, 244969), (199, 108328), (398, 54164), (796, 27082), (1231, 17512), (1592, 13541), (2189, 9848), (2462, 8756), (4378, 4924)]