20474199

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{179}}^2$

素因数の和:435

約数の個数: 18

約数和(自身を含む): 30158856

約数和(自身を除く): 9684657

約数列:

[1, 3, 9, 71, 179, 213, 537, 639, 1611, 12709, 32041, 38127, 96123, 114381, 288369, 2274911, 6824733, 20474199]

約数ペア:

[(1, 20474199), (3, 6824733), (9, 2274911), (71, 288369), (179, 114381), (213, 96123), (537, 38127), (639, 32041), (1611, 12709)]