20557712

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^2\times {\mathrm{191}}^1$

素因数の和:268

約数の個数: 60

約数和(自身を含む): 47282688

約数和(自身を除く): 26724976

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 191, 217, 248, 382, 434, 496, 764, 868, 961, 1337, 1528, 1736, 1922, 2674, 3056, 3472, 3844, 5348, 5921, 6727, 7688, 10696, 11842, 13454, 15376, 21392, 23684, 26908, 41447, 47368, 53816, 82894, 94736, 107632, 165788, 183551, 331576, 367102, 663152, 734204, 1284857, 1468408, 2569714, 2936816, 5139428, 10278856, 20557712]

約数ペア:

[(1, 20557712), (2, 10278856), (4, 5139428), (7, 2936816), (8, 2569714), (14, 1468408), (16, 1284857), (28, 734204), (31, 663152), (56, 367102), (62, 331576), (112, 183551), (124, 165788), (191, 107632), (217, 94736), (248, 82894), (382, 53816), (434, 47368), (496, 41447), (764, 26908), (868, 23684), (961, 21392), (1337, 15376), (1528, 13454), (1736, 11842), (1922, 10696), (2674, 7688), (3056, 6727), (3472, 5921), (3844, 5348)]