81175880

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{5749}}^1$

素因数の和:6113

約数の個数: 32

約数和(自身を含む): 183195000

約数和(自身を除く): 102019120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 5749, 7060, 11498, 14120, 22996, 28745, 45992, 57490, 114980, 229960, 2029397, 4058794, 8117588, 10146985, 16235176, 20293970, 40587940, 81175880]

約数ペア:

[(1, 81175880), (2, 40587940), (4, 20293970), (5, 16235176), (8, 10146985), (10, 8117588), (20, 4058794), (40, 2029397), (353, 229960), (706, 114980), (1412, 57490), (1765, 45992), (2824, 28745), (3530, 22996), (5749, 14120), (7060, 11498)]