80728336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{388117}}^1$

素因数の和:388138

約数の個数: 20

約数和(自身を含む): 168443212

約数和(自身を除く): 87714876

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 388117, 776234, 1552468, 3104936, 5045521, 6209872, 10091042, 20182084, 40364168, 80728336]

約数ペア:

[(1, 80728336), (2, 40364168), (4, 20182084), (8, 10091042), (13, 6209872), (16, 5045521), (26, 3104936), (52, 1552468), (104, 776234), (208, 388117)]