80805712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{388489}}^1$

素因数の和:388510

約数の個数: 20

約数和(自身を含む): 168604660

約数和(自身を除く): 87798948

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 388489, 776978, 1553956, 3107912, 5050357, 6215824, 10100714, 20201428, 40402856, 80805712]

約数ペア:

[(1, 80805712), (2, 40402856), (4, 20201428), (8, 10100714), (13, 6215824), (16, 5050357), (26, 3107912), (52, 1553956), (104, 776978), (208, 388489)]