19708749

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 29432832

約数和(自身を除く): 9724083

約数列:

[1, 3, 9, 43, 127, 129, 381, 387, 401, 1143, 1203, 3609, 5461, 16383, 17243, 49149, 50927, 51729, 152781, 155187, 458343, 2189861, 6569583, 19708749]

約数ペア:

[(1, 19708749), (3, 6569583), (9, 2189861), (43, 458343), (127, 155187), (129, 152781), (381, 51729), (387, 50927), (401, 49149), (1143, 17243), (1203, 16383), (3609, 5461)]