20905227

素因数分解:

$3^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1987}}^1$

素因数の和:2167

約数の個数: 24

約数和(自身を含む): 34734336

約数和(自身を除く): 13829109

約数列:

[1, 3, 7, 9, 21, 63, 167, 501, 1169, 1503, 1987, 3507, 5961, 10521, 13909, 17883, 41727, 125181, 331829, 995487, 2322803, 2986461, 6968409, 20905227]

約数ペア:

[(1, 20905227), (3, 6968409), (7, 2986461), (9, 2322803), (21, 995487), (63, 331829), (167, 125181), (501, 41727), (1169, 17883), (1503, 13909), (1987, 10521), (3507, 5961)]