19681965

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{11821}}^1$

素因数の和:11869

約数の個数: 24

約数和(自身を含む): 35040408

約数和(自身を除く): 15358443

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 11821, 35463, 59105, 106389, 177315, 437377, 531945, 1312131, 2186885, 3936393, 6560655, 19681965]

約数ペア:

[(1, 19681965), (3, 6560655), (5, 3936393), (9, 2186885), (15, 1312131), (37, 531945), (45, 437377), (111, 177315), (185, 106389), (333, 59105), (555, 35463), (1665, 11821)]