20961941

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 28858368

約数和(自身を除く): 7896427

約数列:

[1, 7, 11, 13, 43, 77, 91, 143, 301, 473, 487, 559, 1001, 3311, 3409, 3913, 5357, 6149, 6331, 20941, 37499, 43043, 44317, 69641, 146587, 230351, 272233, 487487, 1612457, 1905631, 2994563, 20961941]

約数ペア:

[(1, 20961941), (7, 2994563), (11, 1905631), (13, 1612457), (43, 487487), (77, 272233), (91, 230351), (143, 146587), (301, 69641), (473, 44317), (487, 43043), (559, 37499), (1001, 20941), (3311, 6331), (3409, 6149), (3913, 5357)]