18991170023

素因数分解:

$7^1\times {\mathrm{137}}^1\times {\mathrm{1231}}^1\times {\mathrm{16087}}^1$

素因数の和:17462

約数の個数: 16

約数和(自身を含む): 21881739264

約数和(自身を除く): 2890569241

約数列:

[1, 7, 137, 959, 1231, 8617, 16087, 112609, 168647, 1180529, 2203919, 15427433, 19803097, 138621679, 2713024289, 18991170023]

約数ペア:

[(1, 18991170023), (7, 2713024289), (137, 138621679), (959, 19803097), (1231, 15427433), (8617, 2203919), (16087, 1180529), (112609, 168647)]