19775791

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{1087}}^1$

素因数の和:1230

約数の個数: 16

約数和(自身を含む): 23814144

約数和(自身を除く): 4038353

約数列:

[1, 7, 23, 113, 161, 791, 1087, 2599, 7609, 18193, 25001, 122831, 175007, 859817, 2825113, 19775791]

約数ペア:

[(1, 19775791), (7, 2825113), (23, 859817), (113, 175007), (161, 122831), (791, 25001), (1087, 18193), (2599, 7609)]