19902992

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40127}}^1$

素因数の和:40166

約数の個数: 20

約数和(自身を含む): 39806976

約数和(自身を除く): 19903984

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40127, 80254, 160508, 321016, 642032, 1243937, 2487874, 4975748, 9951496, 19902992]

約数ペア:

[(1, 19902992), (2, 9951496), (4, 4975748), (8, 2487874), (16, 1243937), (31, 642032), (62, 321016), (124, 160508), (248, 80254), (496, 40127)]