19914993

素因数分解:

$3^2\times 7^1\times {\mathrm{283}}^1\times {\mathrm{1117}}^1$

素因数の和:1413

約数の個数: 24

約数和(自身を含む): 33021248

約数和(自身を除く): 13106255

約数列:

[1, 3, 7, 9, 21, 63, 283, 849, 1117, 1981, 2547, 3351, 5943, 7819, 10053, 17829, 23457, 70371, 316111, 948333, 2212777, 2844999, 6638331, 19914993]

約数ペア:

[(1, 19914993), (3, 6638331), (7, 2844999), (9, 2212777), (21, 948333), (63, 316111), (283, 70371), (849, 23457), (1117, 17829), (1981, 10053), (2547, 7819), (3351, 5943)]