19387654

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67789}}^1$

素因数の和:67815

約数の個数: 16

約数和(自身を含む): 34166160

約数和(自身を除く): 14778506

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 67789, 135578, 745679, 881257, 1491358, 1762514, 9693827, 19387654]

約数ペア:

[(1, 19387654), (2, 9693827), (11, 1762514), (13, 1491358), (22, 881257), (26, 745679), (143, 135578), (286, 67789)]