20198991

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{4799}}^1$

素因数の和:4886

約数の個数: 16

約数和(自身を含む): 28569600

約数和(自身を除く): 8370609

約数列:

[1, 3, 23, 61, 69, 183, 1403, 4209, 4799, 14397, 110377, 292739, 331131, 878217, 6732997, 20198991]

約数ペア:

[(1, 20198991), (3, 6732997), (23, 878217), (61, 331131), (69, 292739), (183, 110377), (1403, 14397), (4209, 4799)]