12377980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 27387360

約数和(自身を除く): 15009380

約数列:

[1, 2, 4, 5, 10, 20, 37, 43, 74, 86, 148, 172, 185, 215, 370, 389, 430, 740, 778, 860, 1556, 1591, 1945, 3182, 3890, 6364, 7780, 7955, 14393, 15910, 16727, 28786, 31820, 33454, 57572, 66908, 71965, 83635, 143930, 167270, 287860, 334540, 618899, 1237798, 2475596, 3094495, 6188990, 12377980]

約数ペア:

[(1, 12377980), (2, 6188990), (4, 3094495), (5, 2475596), (10, 1237798), (20, 618899), (37, 334540), (43, 287860), (74, 167270), (86, 143930), (148, 83635), (172, 71965), (185, 66908), (215, 57572), (370, 33454), (389, 31820), (430, 28786), (740, 16727), (778, 15910), (860, 14393), (1556, 7955), (1591, 7780), (1945, 6364), (3182, 3890)]