218218021

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7561}}^1$

素因数の和:7625

約数の個数: 24

約数和(自身を含む): 275861760

約数和(自身を除く): 57643739

約数列:

[1, 7, 19, 31, 49, 133, 217, 589, 931, 1519, 4123, 7561, 28861, 52927, 143659, 234391, 370489, 1005613, 1640737, 4453429, 7039291, 11485159, 31174003, 218218021]

約数ペア:

[(1, 218218021), (7, 31174003), (19, 11485159), (31, 7039291), (49, 4453429), (133, 1640737), (217, 1005613), (589, 370489), (931, 234391), (1519, 143659), (4123, 52927), (7561, 28861)]