31120090

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{15797}}^1$

素因数の和:16001

約数の個数: 16

約数和(自身を含む): 56304072

約数和(自身を除く): 25183982

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 15797, 31594, 78985, 157970, 3112009, 6224018, 15560045, 31120090]

約数ペア:

[(1, 31120090), (2, 15560045), (5, 6224018), (10, 3112009), (197, 157970), (394, 78985), (985, 31594), (1970, 15797)]