19639711

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 26216960

約数和(自身を除く): 6577249

約数列:

[1, 7, 13, 19, 37, 91, 133, 247, 259, 307, 481, 703, 1729, 2149, 3367, 3991, 4921, 5833, 9139, 11359, 27937, 40831, 63973, 75829, 79513, 147667, 215821, 530803, 1033669, 1510747, 2805673, 19639711]

約数ペア:

[(1, 19639711), (7, 2805673), (13, 1510747), (19, 1033669), (37, 530803), (91, 215821), (133, 147667), (247, 79513), (259, 75829), (307, 63973), (481, 40831), (703, 27937), (1729, 11359), (2149, 9139), (3367, 5833), (3991, 4921)]