19969180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12967}}^1$

素因数の和:12994

約数の個数: 48

約数和(自身を含む): 52286976

約数和(自身を除く): 32317796

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12967, 25934, 51868, 64835, 90769, 129670, 142637, 181538, 259340, 285274, 363076, 453845, 570548, 713185, 907690, 998459, 1426370, 1815380, 1996918, 2852740, 3993836, 4992295, 9984590, 19969180]

約数ペア:

[(1, 19969180), (2, 9984590), (4, 4992295), (5, 3993836), (7, 2852740), (10, 1996918), (11, 1815380), (14, 1426370), (20, 998459), (22, 907690), (28, 713185), (35, 570548), (44, 453845), (55, 363076), (70, 285274), (77, 259340), (110, 181538), (140, 142637), (154, 129670), (220, 90769), (308, 64835), (385, 51868), (770, 25934), (1540, 12967)]