205742540

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{81001}}^1$

素因数の和:81137

約数の個数: 24

約数和(自身を含む): 435466752

約数和(自身を除く): 229724212

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 81001, 162002, 324004, 405005, 810010, 1620020, 10287127, 20574254, 41148508, 51435635, 102871270, 205742540]

約数ペア:

[(1, 205742540), (2, 102871270), (4, 51435635), (5, 41148508), (10, 20574254), (20, 10287127), (127, 1620020), (254, 810010), (508, 405005), (635, 324004), (1270, 162002), (2540, 81001)]