20171984

素因数分解:

$2^4\times 7^1\times {\mathrm{389}}^1\times {\mathrm{463}}^1$

素因数の和:867

約数の個数: 40

約数和(自身を含む): 44878080

約数和(自身を除く): 24706096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 389, 463, 778, 926, 1556, 1852, 2723, 3112, 3241, 3704, 5446, 6224, 6482, 7408, 10892, 12964, 21784, 25928, 43568, 51856, 180107, 360214, 720428, 1260749, 1440856, 2521498, 2881712, 5042996, 10085992, 20171984]

約数ペア:

[(1, 20171984), (2, 10085992), (4, 5042996), (7, 2881712), (8, 2521498), (14, 1440856), (16, 1260749), (28, 720428), (56, 360214), (112, 180107), (389, 51856), (463, 43568), (778, 25928), (926, 21784), (1556, 12964), (1852, 10892), (2723, 7408), (3112, 6482), (3241, 6224), (3704, 5446)]