19991128

素因数分解:

$2^3\times {\mathrm{271}}^1\times {\mathrm{9221}}^1$

素因数の和:9498

約数の個数: 16

約数和(自身を含む): 37625760

約数和(自身を除く): 17634632

約数列:

[1, 2, 4, 8, 271, 542, 1084, 2168, 9221, 18442, 36884, 73768, 2498891, 4997782, 9995564, 19991128]

約数ペア:

[(1, 19991128), (2, 9995564), (4, 4997782), (8, 2498891), (271, 73768), (542, 36884), (1084, 18442), (2168, 9221)]