87001780

素因数分解:

$2^2\times 5^1\times {\mathrm{1051}}^1\times {\mathrm{4139}}^1$

素因数の和:5199

約数の個数: 24

約数和(自身を含む): 182921760

約数和(自身を除く): 95919980

約数列:

[1, 2, 4, 5, 10, 20, 1051, 2102, 4139, 4204, 5255, 8278, 10510, 16556, 20695, 21020, 41390, 82780, 4350089, 8700178, 17400356, 21750445, 43500890, 87001780]

約数ペア:

[(1, 87001780), (2, 43500890), (4, 21750445), (5, 17400356), (10, 8700178), (20, 4350089), (1051, 82780), (2102, 41390), (4139, 21020), (4204, 20695), (5255, 16556), (8278, 10510)]