66721538

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{307}}^1\times {\mathrm{643}}^1$

素因数の和:978

約数の個数: 24

約数和(自身を含む): 108895248

約数和(自身を除く): 42173710

約数列:

[1, 2, 13, 26, 169, 307, 338, 614, 643, 1286, 3991, 7982, 8359, 16718, 51883, 103766, 108667, 197401, 217334, 394802, 2566213, 5132426, 33360769, 66721538]

約数ペア:

[(1, 66721538), (2, 33360769), (13, 5132426), (26, 2566213), (169, 394802), (307, 217334), (338, 197401), (614, 108667), (643, 103766), (1286, 51883), (3991, 16718), (7982, 8359)]