256865200420

素因数分解:

$2^2\times 5^1\times {\mathrm{9719}}^1\times {\mathrm{1321459}}^1$

素因数の和:1331187

約数の個数: 24

約数和(自身を含む): 539472830400

約数和(自身を除く): 282607629980

約数列:

[1, 2, 4, 5, 10, 20, 9719, 19438, 38876, 48595, 97190, 194380, 1321459, 2642918, 5285836, 6607295, 13214590, 26429180, 12843260021, 25686520042, 51373040084, 64216300105, 128432600210, 256865200420]

約数ペア:

[(1, 256865200420), (2, 128432600210), (4, 64216300105), (5, 51373040084), (10, 25686520042), (20, 12843260021), (9719, 26429180), (19438, 13214590), (38876, 6607295), (48595, 5285836), (97190, 2642918), (194380, 1321459)]