20890647

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2347}}^1$

素因数の和:2419

約数の個数: 24

約数和(自身を含む): 32233344

約数和(自身を除く): 11342697

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2347, 2967, 7041, 8901, 21123, 53981, 100921, 161943, 302763, 485829, 908289, 2321183, 6963549, 20890647]

約数ペア:

[(1, 20890647), (3, 6963549), (9, 2321183), (23, 908289), (43, 485829), (69, 302763), (129, 161943), (207, 100921), (387, 53981), (989, 21123), (2347, 8901), (2967, 7041)]