20170220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144073}}^1$

素因数の和:144089

約数の個数: 24

約数和(自身を含む): 48408864

約数和(自身を除く): 28238644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144073, 288146, 576292, 720365, 1008511, 1440730, 2017022, 2881460, 4034044, 5042555, 10085110, 20170220]

約数ペア:

[(1, 20170220), (2, 10085110), (4, 5042555), (5, 4034044), (7, 2881460), (10, 2017022), (14, 1440730), (20, 1008511), (28, 720365), (35, 576292), (70, 288146), (140, 144073)]