40399984

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{6491}}^1$

素因数の和:6888

約数の個数: 20

約数和(自身を含む): 78488280

約数和(自身を除く): 38088296

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 6224, 6491, 12982, 25964, 51928, 103856, 2524999, 5049998, 10099996, 20199992, 40399984]

約数ペア:

[(1, 40399984), (2, 20199992), (4, 10099996), (8, 5049998), (16, 2524999), (389, 103856), (778, 51928), (1556, 25964), (3112, 12982), (6224, 6491)]