12345905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 17998848

約数和(自身を除く): 5652943

約数列:

[1, 5, 11, 13, 31, 55, 65, 143, 155, 341, 403, 557, 715, 1705, 2015, 2785, 4433, 6127, 7241, 17267, 22165, 30635, 36205, 79651, 86335, 189937, 224471, 398255, 949685, 1122355, 2469181, 12345905]

約数ペア:

[(1, 12345905), (5, 2469181), (11, 1122355), (13, 949685), (31, 398255), (55, 224471), (65, 189937), (143, 86335), (155, 79651), (341, 36205), (403, 30635), (557, 22165), (715, 17267), (1705, 7241), (2015, 6127), (2785, 4433)]