19966460

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12637}}^1$

素因数の和:12725

約数の個数: 24

約数和(自身を含む): 42463680

約数和(自身を除く): 22497220

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12637, 25274, 50548, 63185, 126370, 252740, 998323, 1996646, 3993292, 4991615, 9983230, 19966460]

約数ペア:

[(1, 19966460), (2, 9983230), (4, 4991615), (5, 3993292), (10, 1996646), (20, 998323), (79, 252740), (158, 126370), (316, 63185), (395, 50548), (790, 25274), (1580, 12637)]