15990401

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{577}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 18976896

約数和(自身を除く): 2986495

約数列:

[1, 7, 37, 107, 259, 577, 749, 3959, 4039, 21349, 27713, 61739, 149443, 432173, 2284343, 15990401]

約数ペア:

[(1, 15990401), (7, 2284343), (37, 432173), (107, 149443), (259, 61739), (577, 27713), (749, 21349), (3959, 4039)]