81497521

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1\times {\mathrm{523}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 94621824

約数和(自身を除く): 13124303

約数列:

[1, 7, 113, 197, 523, 791, 1379, 3661, 22261, 59099, 103031, 155827, 413693, 721217, 11642503, 81497521]

約数ペア:

[(1, 81497521), (7, 11642503), (113, 721217), (197, 413693), (523, 155827), (791, 103031), (1379, 59099), (3661, 22261)]