20979749

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{419}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 4179931

約数列:

[1, 7, 23, 161, 311, 419, 2177, 2933, 7153, 9637, 50071, 67459, 130309, 912163, 2997107, 20979749]

約数ペア:

[(1, 20979749), (7, 2997107), (23, 912163), (161, 130309), (311, 67459), (419, 50071), (2177, 9637), (2933, 7153)]