19865503

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1721}}^1$

素因数の和:1842

約数の個数: 16

約数和(自身を含む): 24300864

約数和(自身を除く): 4435361

約数列:

[1, 7, 17, 97, 119, 679, 1649, 1721, 11543, 12047, 29257, 166937, 204799, 1168559, 2837929, 19865503]

約数ペア:

[(1, 19865503), (7, 2837929), (17, 1168559), (97, 204799), (119, 166937), (679, 29257), (1649, 12047), (1721, 11543)]