18486923

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{911}}^1$

素因数の和:1154

約数の個数: 16

約数和(自身を含む): 22880256

約数和(自身を除く): 4393333

約数列:

[1, 7, 13, 91, 223, 911, 1561, 2899, 6377, 11843, 20293, 82901, 203153, 1422071, 2640989, 18486923]

約数ペア:

[(1, 18486923), (7, 2640989), (13, 1422071), (91, 203153), (223, 82901), (911, 20293), (1561, 11843), (2899, 6377)]