128538137

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 163924992

約数和(自身を除く): 35386855

約数列:

[1, 7, 13, 43, 91, 107, 301, 307, 559, 749, 1391, 2149, 3913, 3991, 4601, 9737, 13201, 27937, 32207, 32849, 59813, 92407, 171613, 229943, 418691, 427037, 1201291, 1412507, 2989259, 9887549, 18362591, 128538137]

約数ペア:

[(1, 128538137), (7, 18362591), (13, 9887549), (43, 2989259), (91, 1412507), (107, 1201291), (301, 427037), (307, 418691), (559, 229943), (749, 171613), (1391, 92407), (2149, 59813), (3913, 32849), (3991, 32207), (4601, 27937), (9737, 13201)]