129888208

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{188791}}^1$

素因数の和:188842

約数の個数: 20

約数和(自身を含む): 257512288

約数和(自身を除く): 127624080

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 188791, 377582, 755164, 1510328, 3020656, 8118013, 16236026, 32472052, 64944104, 129888208]

約数ペア:

[(1, 129888208), (2, 64944104), (4, 32472052), (8, 16236026), (16, 8118013), (43, 3020656), (86, 1510328), (172, 755164), (344, 377582), (688, 188791)]