28156940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{201121}}^1$

素因数の和:201137

約数の個数: 24

約数和(自身を含む): 67576992

約数和(自身を除く): 39420052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 201121, 402242, 804484, 1005605, 1407847, 2011210, 2815694, 4022420, 5631388, 7039235, 14078470, 28156940]

約数ペア:

[(1, 28156940), (2, 14078470), (4, 7039235), (5, 5631388), (7, 4022420), (10, 2815694), (14, 2011210), (20, 1407847), (28, 1005605), (35, 804484), (70, 402242), (140, 201121)]