21820029

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1601}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 36910080

約数和(自身を除く): 15090051

約数列:

[1, 3, 7, 11, 21, 33, 59, 77, 177, 231, 413, 649, 1239, 1601, 1947, 4543, 4803, 11207, 13629, 17611, 33621, 52833, 94459, 123277, 283377, 369831, 661213, 1039049, 1983639, 3117147, 7273343, 21820029]

約数ペア:

[(1, 21820029), (3, 7273343), (7, 3117147), (11, 1983639), (21, 1039049), (33, 661213), (59, 369831), (77, 283377), (177, 123277), (231, 94459), (413, 52833), (649, 33621), (1239, 17611), (1601, 13629), (1947, 11207), (4543, 4803)]