18731128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{463}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 38001600

約数和(自身を除く): 19270472

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 389, 463, 778, 926, 1556, 1852, 3112, 3704, 5057, 6019, 10114, 12038, 20228, 24076, 40456, 48152, 180107, 360214, 720428, 1440856, 2341391, 4682782, 9365564, 18731128]

約数ペア:

[(1, 18731128), (2, 9365564), (4, 4682782), (8, 2341391), (13, 1440856), (26, 720428), (52, 360214), (104, 180107), (389, 48152), (463, 40456), (778, 24076), (926, 20228), (1556, 12038), (1852, 10114), (3112, 6019), (3704, 5057)]