81975579

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{4391}}^1$

素因数の和:4535

約数の個数: 24

約数和(自身を含む): 128176128

約数和(自身を除く): 46200549

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 2667, 4391, 6223, 13173, 18669, 30737, 92211, 215159, 557657, 645477, 1672971, 3903599, 11710797, 27325193, 81975579]

約数ペア:

[(1, 81975579), (3, 27325193), (7, 11710797), (21, 3903599), (49, 1672971), (127, 645477), (147, 557657), (381, 215159), (889, 92211), (2667, 30737), (4391, 18669), (6223, 13173)]