80278

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:143

約数の個数: 16

約数和(自身を含む): 136080

約数和(自身を除く): 55802

約数列:

[1, 2, 11, 22, 41, 82, 89, 178, 451, 902, 979, 1958, 3649, 7298, 40139, 80278]

約数ペア:

[(1, 80278), (2, 40139), (11, 7298), (22, 3649), (41, 1958), (82, 979), (89, 902), (178, 451)]