81067400

素因数分解:

$2^3\times 5^2\times {\mathrm{397}}^1\times {\mathrm{1021}}^1$

素因数の和:1434

約数の個数: 48

約数和(自身を含む): 189141540

約数和(自身を除く): 108074140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 397, 794, 1021, 1588, 1985, 2042, 3176, 3970, 4084, 5105, 7940, 8168, 9925, 10210, 15880, 19850, 20420, 25525, 39700, 40840, 51050, 79400, 102100, 204200, 405337, 810674, 1621348, 2026685, 3242696, 4053370, 8106740, 10133425, 16213480, 20266850, 40533700, 81067400]

約数ペア:

[(1, 81067400), (2, 40533700), (4, 20266850), (5, 16213480), (8, 10133425), (10, 8106740), (20, 4053370), (25, 3242696), (40, 2026685), (50, 1621348), (100, 810674), (200, 405337), (397, 204200), (794, 102100), (1021, 79400), (1588, 51050), (1985, 40840), (2042, 39700), (3176, 25525), (3970, 20420), (4084, 19850), (5105, 15880), (7940, 10210), (8168, 9925)]