21973119

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 36465408

約数和(自身を除く): 14492289

約数列:

[1, 3, 7, 21, 23, 49, 67, 69, 97, 147, 161, 201, 291, 469, 483, 679, 1127, 1407, 1541, 2037, 2231, 3283, 3381, 4623, 4753, 6499, 6693, 9849, 10787, 14259, 15617, 19497, 32361, 45493, 46851, 75509, 109319, 136479, 149477, 226527, 318451, 327957, 448431, 955353, 1046339, 3139017, 7324373, 21973119]

約数ペア:

[(1, 21973119), (3, 7324373), (7, 3139017), (21, 1046339), (23, 955353), (49, 448431), (67, 327957), (69, 318451), (97, 226527), (147, 149477), (161, 136479), (201, 109319), (291, 75509), (469, 46851), (483, 45493), (679, 32361), (1127, 19497), (1407, 15617), (1541, 14259), (2037, 10787), (2231, 9849), (3283, 6693), (3381, 6499), (4623, 4753)]