31954280

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1627}}^1$

素因数の和:2129

約数の個数: 32

約数和(自身を含む): 72087840

約数和(自身を除く): 40133560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1627, 1964, 2455, 3254, 3928, 4910, 6508, 8135, 9820, 13016, 16270, 19640, 32540, 65080, 798857, 1597714, 3195428, 3994285, 6390856, 7988570, 15977140, 31954280]

約数ペア:

[(1, 31954280), (2, 15977140), (4, 7988570), (5, 6390856), (8, 3994285), (10, 3195428), (20, 1597714), (40, 798857), (491, 65080), (982, 32540), (1627, 19640), (1964, 16270), (2455, 13016), (3254, 9820), (3928, 8135), (4910, 6508)]