81539185

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{25601}}^1$

素因数の和:25633

約数の個数: 24

約数和(自身を含む): 122582376

約数和(自身を除く): 41043191

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 25601, 128005, 179207, 332813, 896035, 1254449, 1664065, 2329691, 6272245, 11648455, 16307837, 81539185]

約数ペア:

[(1, 81539185), (5, 16307837), (7, 11648455), (13, 6272245), (35, 2329691), (49, 1664065), (65, 1254449), (91, 896035), (245, 332813), (455, 179207), (637, 128005), (3185, 25601)]