81851536

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393517}}^1$

素因数の和:393538

約数の個数: 20

約数和(自身を含む): 170786812

約数和(自身を除く): 88935276

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393517, 787034, 1574068, 3148136, 5115721, 6296272, 10231442, 20462884, 40925768, 81851536]

約数ペア:

[(1, 81851536), (2, 40925768), (4, 20462884), (8, 10231442), (13, 6296272), (16, 5115721), (26, 3148136), (52, 1574068), (104, 787034), (208, 393517)]