638257196

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{21589}}^1$

素因数の和:22001

約数の個数: 24

約数和(自身を含む): 1178814000

約数和(自身を除く): 540556804

約数列:

[1, 2, 4, 19, 38, 76, 389, 778, 1556, 7391, 14782, 21589, 29564, 43178, 86356, 410191, 820382, 1640764, 8398121, 16796242, 33592484, 159564299, 319128598, 638257196]

約数ペア:

[(1, 638257196), (2, 319128598), (4, 159564299), (19, 33592484), (38, 16796242), (76, 8398121), (389, 1640764), (778, 820382), (1556, 410191), (7391, 86356), (14782, 43178), (21589, 29564)]