9913840

素因数分解:

$2^4\times 5^1\times {\mathrm{123923}}^1$

素因数の和:123936

約数の個数: 20

約数和(自身を含む): 23049864

約数和(自身を除く): 13136024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 123923, 247846, 495692, 619615, 991384, 1239230, 1982768, 2478460, 4956920, 9913840]

約数ペア:

[(1, 9913840), (2, 4956920), (4, 2478460), (5, 1982768), (8, 1239230), (10, 991384), (16, 619615), (20, 495692), (40, 247846), (80, 123923)]