19948839

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{467}}^1\times {\mathrm{491}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 27630720

約数和(自身を除く): 7681881

約数列:

[1, 3, 29, 87, 467, 491, 1401, 1473, 13543, 14239, 40629, 42717, 229297, 687891, 6649613, 19948839]

約数ペア:

[(1, 19948839), (3, 6649613), (29, 687891), (87, 229297), (467, 42717), (491, 40629), (1401, 14239), (1473, 13543)]