21549741

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1\times {\mathrm{347}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 29220864

約数和(自身を除く): 7671123

約数列:

[1, 3, 127, 163, 347, 381, 489, 1041, 20701, 44069, 56561, 62103, 132207, 169683, 7183247, 21549741]

約数ペア:

[(1, 21549741), (3, 7183247), (127, 169683), (163, 132207), (347, 62103), (381, 56561), (489, 44069), (1041, 20701)]