81121327

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1\times {\mathrm{691}}^1$

素因数の和:1270

約数の個数: 16

約数和(自身を含む): 96016384

約数和(自身を除く): 14895057

約数列:

[1, 7, 31, 217, 541, 691, 3787, 4837, 16771, 21421, 117397, 149947, 373831, 2616817, 11588761, 81121327]

約数ペア:

[(1, 81121327), (7, 11588761), (31, 2616817), (217, 373831), (541, 149947), (691, 117397), (3787, 21421), (4837, 16771)]