20921283

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{479}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 31749120

約数和(自身を除く): 10827837

約数列:

[1, 3, 9, 23, 69, 207, 211, 479, 633, 1437, 1899, 4311, 4853, 11017, 14559, 33051, 43677, 99153, 101069, 303207, 909621, 2324587, 6973761, 20921283]

約数ペア:

[(1, 20921283), (3, 6973761), (9, 2324587), (23, 909621), (69, 303207), (207, 101069), (211, 99153), (479, 43677), (633, 33051), (1437, 14559), (1899, 11017), (4311, 4853)]