131552020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1\times {\mathrm{457}}^1$

素因数の和:892

約数の個数: 48

約数和(自身を含む): 285077520

約数和(自身を除く): 153525500

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 389, 457, 740, 778, 914, 1556, 1828, 1945, 2285, 3890, 4570, 7780, 9140, 14393, 16909, 28786, 33818, 57572, 67636, 71965, 84545, 143930, 169090, 177773, 287860, 338180, 355546, 711092, 888865, 1777730, 3555460, 6577601, 13155202, 26310404, 32888005, 65776010, 131552020]

約数ペア:

[(1, 131552020), (2, 65776010), (4, 32888005), (5, 26310404), (10, 13155202), (20, 6577601), (37, 3555460), (74, 1777730), (148, 888865), (185, 711092), (370, 355546), (389, 338180), (457, 287860), (740, 177773), (778, 169090), (914, 143930), (1556, 84545), (1828, 71965), (1945, 67636), (2285, 57572), (3890, 33818), (4570, 28786), (7780, 16909), (9140, 14393)]