81378171

素因数分解:

$3^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1453}}^1$

素因数の和:1600

約数の個数: 36

約数和(自身を含む): 137908992

約数和(自身を除く): 56530821

約数列:

[1, 3, 7, 9, 21, 49, 63, 127, 147, 381, 441, 889, 1143, 1453, 2667, 4359, 6223, 8001, 10171, 13077, 18669, 30513, 56007, 71197, 91539, 184531, 213591, 553593, 640773, 1291717, 1660779, 3875151, 9042019, 11625453, 27126057, 81378171]

約数ペア:

[(1, 81378171), (3, 27126057), (7, 11625453), (9, 9042019), (21, 3875151), (49, 1660779), (63, 1291717), (127, 640773), (147, 553593), (381, 213591), (441, 184531), (889, 91539), (1143, 71197), (1453, 56007), (2667, 30513), (4359, 18669), (6223, 13077), (8001, 10171)]