81961648

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{10433}}^1$

素因数の和:10932

約数の個数: 20

約数和(自身を含む): 159139368

約数和(自身を除く): 77177720

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 3928, 7856, 10433, 20866, 41732, 83464, 166928, 5122603, 10245206, 20490412, 40980824, 81961648]

約数ペア:

[(1, 81961648), (2, 40980824), (4, 20490412), (8, 10245206), (16, 5122603), (491, 166928), (982, 83464), (1964, 41732), (3928, 20866), (7856, 10433)]