21439180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153137}}^1$

素因数の和:153153

約数の個数: 24

約数和(自身を含む): 51454368

約数和(自身を除く): 30015188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153137, 306274, 612548, 765685, 1071959, 1531370, 2143918, 3062740, 4287836, 5359795, 10719590, 21439180]

約数ペア:

[(1, 21439180), (2, 10719590), (4, 5359795), (5, 4287836), (7, 3062740), (10, 2143918), (14, 1531370), (20, 1071959), (28, 765685), (35, 612548), (70, 306274), (140, 153137)]