256637800

素因数分解:

$2^3\times 5^2\times {\mathrm{509}}^1\times {\mathrm{2521}}^1$

素因数の和:3046

約数の個数: 48

約数和(自身を含む): 598092300

約数和(自身を除く): 341454500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 509, 1018, 2036, 2521, 2545, 4072, 5042, 5090, 10084, 10180, 12605, 12725, 20168, 20360, 25210, 25450, 50420, 50900, 63025, 100840, 101800, 126050, 252100, 504200, 1283189, 2566378, 5132756, 6415945, 10265512, 12831890, 25663780, 32079725, 51327560, 64159450, 128318900, 256637800]

約数ペア:

[(1, 256637800), (2, 128318900), (4, 64159450), (5, 51327560), (8, 32079725), (10, 25663780), (20, 12831890), (25, 10265512), (40, 6415945), (50, 5132756), (100, 2566378), (200, 1283189), (509, 504200), (1018, 252100), (2036, 126050), (2521, 101800), (2545, 100840), (4072, 63025), (5042, 50900), (5090, 50420), (10084, 25450), (10180, 25210), (12605, 20360), (12725, 20168)]