261089420

素因数分解:

$2^2\times 5^1\times {\mathrm{1051}}^1\times {\mathrm{12421}}^1$

素因数の和:13481

約数の個数: 24

約数和(自身を含む): 548853648

約数和(自身を除く): 287764228

約数列:

[1, 2, 4, 5, 10, 20, 1051, 2102, 4204, 5255, 10510, 12421, 21020, 24842, 49684, 62105, 124210, 248420, 13054471, 26108942, 52217884, 65272355, 130544710, 261089420]

約数ペア:

[(1, 261089420), (2, 130544710), (4, 65272355), (5, 52217884), (10, 26108942), (20, 13054471), (1051, 248420), (2102, 124210), (4204, 62105), (5255, 49684), (10510, 24842), (12421, 21020)]