20001992

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{19687}}^1$

素因数の和:19820

約数の個数: 16

約数和(自身を含む): 37800960

約数和(自身を除く): 17798968

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 19687, 39374, 78748, 157496, 2500249, 5000498, 10000996, 20001992]

約数ペア:

[(1, 20001992), (2, 10000996), (4, 5000498), (8, 2500249), (127, 157496), (254, 78748), (508, 39374), (1016, 19687)]