21557199

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{1237}}^1$

素因数の和:1434

約数の個数: 16

約数和(自身を含む): 29731808

約数和(自身を除く): 8174609

約数列:

[1, 3, 37, 111, 157, 471, 1237, 3711, 5809, 17427, 45769, 137307, 194209, 582627, 7185733, 21557199]

約数ペア:

[(1, 21557199), (3, 7185733), (37, 582627), (111, 194209), (157, 137307), (471, 45769), (1237, 17427), (3711, 5809)]