19691180

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2531}}^1$

素因数の和:2929

約数の個数: 24

約数和(自身を含む): 41474160

約数和(自身を除く): 21782980

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2531, 3890, 5062, 7780, 10124, 12655, 25310, 50620, 984559, 1969118, 3938236, 4922795, 9845590, 19691180]

約数ペア:

[(1, 19691180), (2, 9845590), (4, 4922795), (5, 3938236), (10, 1969118), (20, 984559), (389, 50620), (778, 25310), (1556, 12655), (1945, 10124), (2531, 7780), (3890, 5062)]