31527880

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4001}}^1$

素因数の和:4209

約数の個数: 32

約数和(自身を含む): 71315640

約数和(自身を除く): 39787760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 4001, 7880, 8002, 16004, 20005, 32008, 40010, 80020, 160040, 788197, 1576394, 3152788, 3940985, 6305576, 7881970, 15763940, 31527880]

約数ペア:

[(1, 31527880), (2, 15763940), (4, 7881970), (5, 6305576), (8, 3940985), (10, 3152788), (20, 1576394), (40, 788197), (197, 160040), (394, 80020), (788, 40010), (985, 32008), (1576, 20005), (1970, 16004), (3940, 8002), (4001, 7880)]