2991205

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 4329720

約数和(自身を除く): 1338515

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 421, 1015, 1421, 2105, 2947, 7105, 12209, 14735, 20629, 61045, 85463, 103145, 427315, 598241, 2991205]

約数ペア:

[(1, 2991205), (5, 598241), (7, 427315), (29, 103145), (35, 85463), (49, 61045), (145, 20629), (203, 14735), (245, 12209), (421, 7105), (1015, 2947), (1421, 2105)]