71856981

素因数分解:

$3^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1283}}^1$

素因数の和:1430

約数の個数: 36

約数和(自身を含む): 121784832

約数和(自身を除く): 49927851

約数列:

[1, 3, 7, 9, 21, 49, 63, 127, 147, 381, 441, 889, 1143, 1283, 2667, 3849, 6223, 8001, 8981, 11547, 18669, 26943, 56007, 62867, 80829, 162941, 188601, 488823, 565803, 1140587, 1466469, 3421761, 7984109, 10265283, 23952327, 71856981]

約数ペア:

[(1, 71856981), (3, 23952327), (7, 10265283), (9, 7984109), (21, 3421761), (49, 1466469), (63, 1140587), (127, 565803), (147, 488823), (381, 188601), (441, 162941), (889, 80829), (1143, 62867), (1283, 56007), (2667, 26943), (3849, 18669), (6223, 11547), (8001, 8981)]