18810393

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 30176256

約数和(自身を除く): 11365863

約数列:

[1, 3, 7, 21, 37, 43, 111, 129, 259, 301, 563, 777, 903, 1591, 1689, 3941, 4773, 11137, 11823, 20831, 24209, 33411, 62493, 72627, 145817, 169463, 437451, 508389, 895733, 2687199, 6270131, 18810393]

約数ペア:

[(1, 18810393), (3, 6270131), (7, 2687199), (21, 895733), (37, 508389), (43, 437451), (111, 169463), (129, 145817), (259, 72627), (301, 62493), (563, 33411), (777, 24209), (903, 20831), (1591, 11823), (1689, 11137), (3941, 4773)]