18966311

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 24718848

約数和(自身を除く): 5752537

約数列:

[1, 7, 13, 37, 43, 91, 131, 259, 301, 481, 559, 917, 1591, 1703, 3367, 3913, 4847, 5633, 11137, 11921, 20683, 33929, 39431, 63011, 73229, 144781, 208421, 441077, 512603, 1458947, 2709473, 18966311]

約数ペア:

[(1, 18966311), (7, 2709473), (13, 1458947), (37, 512603), (43, 441077), (91, 208421), (131, 144781), (259, 73229), (301, 63011), (481, 39431), (559, 33929), (917, 20683), (1591, 11921), (1703, 11137), (3367, 5633), (3913, 4847)]