87678860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257879}}^1$

素因数の和:257905

約数の個数: 24

約数和(自身を含む): 194957280

約数和(自身を除く): 107278420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 257879, 515758, 1031516, 1289395, 2578790, 4383943, 5157580, 8767886, 17535772, 21919715, 43839430, 87678860]

約数ペア:

[(1, 87678860), (2, 43839430), (4, 21919715), (5, 17535772), (10, 8767886), (17, 5157580), (20, 4383943), (34, 2578790), (68, 1289395), (85, 1031516), (170, 515758), (340, 257879)]