19997924

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{499}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 36036000

約数和(自身を除く): 16038076

約数列:

[1, 2, 4, 43, 86, 172, 233, 466, 499, 932, 998, 1996, 10019, 20038, 21457, 40076, 42914, 85828, 116267, 232534, 465068, 4999481, 9998962, 19997924]

約数ペア:

[(1, 19997924), (2, 9998962), (4, 4999481), (43, 465068), (86, 232534), (172, 116267), (233, 85828), (466, 42914), (499, 40076), (932, 21457), (998, 20038), (1996, 10019)]