289940980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2071007}}^1$

素因数の和:2071023

約数の個数: 24

約数和(自身を含む): 695858688

約数和(自身を除く): 405917708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2071007, 4142014, 8284028, 10355035, 14497049, 20710070, 28994098, 41420140, 57988196, 72485245, 144970490, 289940980]

約数ペア:

[(1, 289940980), (2, 144970490), (4, 72485245), (5, 57988196), (7, 41420140), (10, 28994098), (14, 20710070), (20, 14497049), (28, 10355035), (35, 8284028), (70, 4142014), (140, 2071007)]