81608140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{177409}}^1$

素因数の和:177441

約数の個数: 24

約数和(自身を含む): 178829280

約数和(自身を除く): 97221140

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 177409, 354818, 709636, 887045, 1774090, 3548180, 4080407, 8160814, 16321628, 20402035, 40804070, 81608140]

約数ペア:

[(1, 81608140), (2, 40804070), (4, 20402035), (5, 16321628), (10, 8160814), (20, 4080407), (23, 3548180), (46, 1774090), (92, 887045), (115, 709636), (230, 354818), (460, 177409)]