19981168

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9533}}^1$

素因数の和:9672

約数の個数: 20

約数和(自身を含む): 39013128

約数和(自身を除く): 19031960

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9533, 19066, 38132, 76264, 152528, 1248823, 2497646, 4995292, 9990584, 19981168]

約数ペア:

[(1, 19981168), (2, 9990584), (4, 4995292), (8, 2497646), (16, 1248823), (131, 152528), (262, 76264), (524, 38132), (1048, 19066), (2096, 9533)]