81455247

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{42491}}^1$

素因数の和:42571

約数の個数: 16

約数和(自身を含む): 122376960

約数和(自身を除く): 40921713

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 42491, 127473, 382419, 1147257, 3016861, 9050583, 27151749, 81455247]

約数ペア:

[(1, 81455247), (3, 27151749), (9, 9050583), (27, 3016861), (71, 1147257), (213, 382419), (639, 127473), (1917, 42491)]