55556980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 120753360

約数和(自身を除く): 65196380

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 193, 370, 386, 389, 740, 772, 778, 965, 1556, 1930, 1945, 3860, 3890, 7141, 7780, 14282, 14393, 28564, 28786, 35705, 57572, 71410, 71965, 75077, 142820, 143930, 150154, 287860, 300308, 375385, 750770, 1501540, 2777849, 5555698, 11111396, 13889245, 27778490, 55556980]

約数ペア:

[(1, 55556980), (2, 27778490), (4, 13889245), (5, 11111396), (10, 5555698), (20, 2777849), (37, 1501540), (74, 750770), (148, 375385), (185, 300308), (193, 287860), (370, 150154), (386, 143930), (389, 142820), (740, 75077), (772, 71965), (778, 71410), (965, 57572), (1556, 35705), (1930, 28786), (1945, 28564), (3860, 14393), (3890, 14282), (7141, 7780)]