19917807

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{72959}}^1$

素因数の和:72982

約数の個数: 16

約数和(自身を含む): 32686080

約数和(自身を除く): 12768273

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 72959, 218877, 510713, 948467, 1532139, 2845401, 6639269, 19917807]

約数ペア:

[(1, 19917807), (3, 6639269), (7, 2845401), (13, 1532139), (21, 948467), (39, 510713), (91, 218877), (273, 72959)]