19540768

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{439}}^1$

素因数の和:569

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 22371872

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 107, 208, 214, 416, 428, 439, 856, 878, 1391, 1712, 1756, 2782, 3424, 3512, 5564, 5707, 7024, 11128, 11414, 14048, 22256, 22828, 44512, 45656, 46973, 91312, 93946, 182624, 187892, 375784, 610649, 751568, 1221298, 1503136, 2442596, 4885192, 9770384, 19540768]

約数ペア:

[(1, 19540768), (2, 9770384), (4, 4885192), (8, 2442596), (13, 1503136), (16, 1221298), (26, 751568), (32, 610649), (52, 375784), (104, 187892), (107, 182624), (208, 93946), (214, 91312), (416, 46973), (428, 45656), (439, 44512), (856, 22828), (878, 22256), (1391, 14048), (1712, 11414), (1756, 11128), (2782, 7024), (3424, 5707), (3512, 5564)]