209364820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1495463}}^1$

素因数の和:1495479

約数の個数: 24

約数和(自身を含む): 502475904

約数和(自身を除く): 293111084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1495463, 2990926, 5981852, 7477315, 10468241, 14954630, 20936482, 29909260, 41872964, 52341205, 104682410, 209364820]

約数ペア:

[(1, 209364820), (2, 104682410), (4, 52341205), (5, 41872964), (7, 29909260), (10, 20936482), (14, 14954630), (20, 10468241), (28, 7477315), (35, 5981852), (70, 2990926), (140, 1495463)]