21996471

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1901}}^1$

素因数の和:1959

約数の個数: 32

約数和(自身を含む): 36518400

約数和(自身を除く): 14521929

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1901, 3857, 5703, 11571, 13307, 36119, 39921, 55129, 108357, 165387, 252833, 385903, 758499, 1047451, 1157709, 3142353, 7332157, 21996471]

約数ペア:

[(1, 21996471), (3, 7332157), (7, 3142353), (19, 1157709), (21, 1047451), (29, 758499), (57, 385903), (87, 252833), (133, 165387), (203, 108357), (399, 55129), (551, 39921), (609, 36119), (1653, 13307), (1901, 11571), (3857, 5703)]