198156959

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197959}}^1$

素因数の和:197990

約数の個数: 16

約数和(自身を含む): 266058240

約数和(自身を除く): 67901281

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 197959, 1385713, 2177549, 2573467, 15242843, 18014269, 28308137, 198156959]

約数ペア:

[(1, 198156959), (7, 28308137), (11, 18014269), (13, 15242843), (77, 2573467), (91, 2177549), (143, 1385713), (1001, 197959)]