20816872

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{83939}}^1$

素因数の和:83976

約数の個数: 16

約数和(自身を含む): 40291200

約数和(自身を除く): 19474328

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 83939, 167878, 335756, 671512, 2602109, 5204218, 10408436, 20816872]

約数ペア:

[(1, 20816872), (2, 10408436), (4, 5204218), (8, 2602109), (31, 671512), (62, 335756), (124, 167878), (248, 83939)]