20198456884

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{82780561}}^1$

素因数の和:82780626

約数の個数: 12

約数和(自身を含む): 35926763908

約数和(自身を除く): 15728307024

約数列:

[1, 2, 4, 61, 122, 244, 82780561, 165561122, 331122244, 5049614221, 10099228442, 20198456884]

約数ペア:

[(1, 20198456884), (2, 10099228442), (4, 5049614221), (61, 331122244), (122, 165561122), (244, 82780561)]