19991528

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{80611}}^1$

素因数の和:80648

約数の個数: 16

約数和(自身を含む): 38693760

約数和(自身を除く): 18702232

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 80611, 161222, 322444, 644888, 2498941, 4997882, 9995764, 19991528]

約数ペア:

[(1, 19991528), (2, 9995764), (4, 4997882), (8, 2498941), (31, 644888), (62, 322444), (124, 161222), (248, 80611)]