81987651

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{1907}}^1$

素因数の和:2211

約数の個数: 24

約数和(自身を含む): 125905104

約数和(自身を除く): 43917453

約数列:

[1, 3, 9, 17, 51, 153, 281, 843, 1907, 2529, 4777, 5721, 14331, 17163, 32419, 42993, 97257, 291771, 535867, 1607601, 4822803, 9109739, 27329217, 81987651]

約数ペア:

[(1, 81987651), (3, 27329217), (9, 9109739), (17, 4822803), (51, 1607601), (153, 535867), (281, 291771), (843, 97257), (1907, 42993), (2529, 32419), (4777, 17163), (5721, 14331)]