28057580

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10709}}^1$

素因数の和:10849

約数の個数: 24

約数和(自身を含む): 59376240

約数和(自身を除く): 31318660

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 10709, 21418, 42836, 53545, 107090, 214180, 1402879, 2805758, 5611516, 7014395, 14028790, 28057580]

約数ペア:

[(1, 28057580), (2, 14028790), (4, 7014395), (5, 5611516), (10, 2805758), (20, 1402879), (131, 214180), (262, 107090), (524, 53545), (655, 42836), (1310, 21418), (2620, 10709)]