18880804

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{661}}^1$

素因数の和:895

約数の個数: 24

約数和(自身を含む): 34161848

約数和(自身を除く): 15281044

約数列:

[1, 2, 4, 37, 74, 148, 193, 386, 661, 772, 1322, 2644, 7141, 14282, 24457, 28564, 48914, 97828, 127573, 255146, 510292, 4720201, 9440402, 18880804]

約数ペア:

[(1, 18880804), (2, 9440402), (4, 4720201), (37, 510292), (74, 255146), (148, 127573), (193, 97828), (386, 48914), (661, 28564), (772, 24457), (1322, 14282), (2644, 7141)]