19919812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3257}}^1$

素因数の和:3411

約数の個数: 24

約数和(自身を含む): 38314080

約数和(自身を除く): 18394268

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3257, 6116, 6514, 13028, 35827, 71654, 143308, 452723, 905446, 1810892, 4979953, 9959906, 19919812]

約数ペア:

[(1, 19919812), (2, 9959906), (4, 4979953), (11, 1810892), (22, 905446), (44, 452723), (139, 143308), (278, 71654), (556, 35827), (1529, 13028), (3058, 6514), (3257, 6116)]