1405266740

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{171793}}^1$

素因数の和:172211

約数の個数: 24

約数和(自身を含む): 2958292680

約数和(自身を除く): 1553025940

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 171793, 343586, 687172, 858965, 1717930, 3435860, 70263337, 140526674, 281053348, 351316685, 702633370, 1405266740]

約数ペア:

[(1, 1405266740), (2, 702633370), (4, 351316685), (5, 281053348), (10, 140526674), (20, 70263337), (409, 3435860), (818, 1717930), (1636, 858965), (2045, 687172), (4090, 343586), (8180, 171793)]