19978168

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{15511}}^1$

素因数の和:15547

約数の個数: 32

約数和(自身を含む): 44674560

約数和(自身を除く): 24696392

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 15511, 31022, 62044, 108577, 124088, 217154, 356753, 434308, 713506, 868616, 1427012, 2497271, 2854024, 4994542, 9989084, 19978168]

約数ペア:

[(1, 19978168), (2, 9989084), (4, 4994542), (7, 2854024), (8, 2497271), (14, 1427012), (23, 868616), (28, 713506), (46, 434308), (56, 356753), (92, 217154), (161, 124088), (184, 108577), (322, 62044), (644, 31022), (1288, 15511)]