19813898

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 36

約数和(自身を含む): 33799734

約数和(自身を除く): 13985836

約数列:

[1, 2, 13, 26, 31, 61, 62, 122, 169, 338, 403, 793, 806, 961, 1586, 1891, 1922, 3782, 5239, 10309, 10478, 12493, 20618, 24583, 24986, 49166, 58621, 117242, 162409, 319579, 324818, 639158, 762073, 1524146, 9906949, 19813898]

約数ペア:

[(1, 19813898), (2, 9906949), (13, 1524146), (26, 762073), (31, 639158), (61, 324818), (62, 319579), (122, 162409), (169, 117242), (338, 58621), (403, 49166), (793, 24986), (806, 24583), (961, 20618), (1586, 12493), (1891, 10478), (1922, 10309), (3782, 5239)]