209898997

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2251}}^1$

素因数の和:2449

約数の個数: 24

約数和(自身を含む): 268024032

約数和(自身を除く): 58125035

約数列:

[1, 7, 11, 49, 77, 173, 539, 1211, 1903, 2251, 8477, 13321, 15757, 24761, 93247, 110299, 173327, 389423, 1213289, 2725961, 4283653, 19081727, 29985571, 209898997]

約数ペア:

[(1, 209898997), (7, 29985571), (11, 19081727), (49, 4283653), (77, 2725961), (173, 1213289), (539, 389423), (1211, 173327), (1903, 110299), (2251, 93247), (8477, 24761), (13321, 15757)]