19990322492

素因数分解:

$2^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{2777977}}^1$

素因数の和:2778245

約数の個数: 24

約数和(自身を含む): 40136226144

約数和(自身を除く): 20145903652

約数列:

[1, 2, 4, 7, 14, 28, 257, 514, 1028, 1799, 3598, 7196, 2777977, 5555954, 11111908, 19445839, 38891678, 77783356, 713940089, 1427880178, 2855760356, 4997580623, 9995161246, 19990322492]

約数ペア:

[(1, 19990322492), (2, 9995161246), (4, 4997580623), (7, 2855760356), (14, 1427880178), (28, 713940089), (257, 77783356), (514, 38891678), (1028, 19445839), (1799, 11111908), (3598, 5555954), (7196, 2777977)]