201439665

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{639491}}^1$

素因数の和:639509

約数の個数: 24

約数和(自身を含む): 399043008

約数和(自身を除く): 197603343

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 639491, 1918473, 3197455, 4476437, 5755419, 9592365, 13429311, 22382185, 28777095, 40287933, 67146555, 201439665]

約数ペア:

[(1, 201439665), (3, 67146555), (5, 40287933), (7, 28777095), (9, 22382185), (15, 13429311), (21, 9592365), (35, 5755419), (45, 4476437), (63, 3197455), (105, 1918473), (315, 639491)]