9915280

素因数分解:

$2^4\times 5^1\times {\mathrm{123941}}^1$

素因数の和:123954

約数の個数: 20

約数和(自身を含む): 23053212

約数和(自身を除く): 13137932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 123941, 247882, 495764, 619705, 991528, 1239410, 1983056, 2478820, 4957640, 9915280]

約数ペア:

[(1, 9915280), (2, 4957640), (4, 2478820), (5, 1983056), (8, 1239410), (10, 991528), (16, 619705), (20, 495764), (40, 247882), (80, 123941)]