21747231

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1979}}^1$

素因数の和:2036

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 14367969

約数列:

[1, 3, 9, 11, 27, 33, 37, 99, 111, 297, 333, 407, 999, 1221, 1979, 3663, 5937, 10989, 17811, 21769, 53433, 65307, 73223, 195921, 219669, 587763, 659007, 805453, 1977021, 2416359, 7249077, 21747231]

約数ペア:

[(1, 21747231), (3, 7249077), (9, 2416359), (11, 1977021), (27, 805453), (33, 659007), (37, 587763), (99, 219669), (111, 195921), (297, 73223), (333, 65307), (407, 53433), (999, 21769), (1221, 17811), (1979, 10989), (3663, 5937)]