178691728

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{80347}}^1$

素因数の和:80494

約数の個数: 20

約数和(自身を含む): 348710320

約数和(自身を除く): 170018592

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 80347, 160694, 321388, 642776, 1285552, 11168233, 22336466, 44672932, 89345864, 178691728]

約数ペア:

[(1, 178691728), (2, 89345864), (4, 44672932), (8, 22336466), (16, 11168233), (139, 1285552), (278, 642776), (556, 321388), (1112, 160694), (2224, 80347)]